diff --git a/modules/core/src/classes/base/math-array.ts b/modules/core/src/classes/base/math-array.ts
index 467be9bb..c076516c 100644
--- a/modules/core/src/classes/base/math-array.ts
+++ b/modules/core/src/classes/base/math-array.ts
@@ -1,4 +1,7 @@
-// math.gl, MIT License
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 import {NumericArray} from '@math.gl/types';
 import {ConfigurationOptions, config, formatValue, equals, isArray} from '../../lib/common';
 
diff --git a/modules/core/src/classes/base/matrix.ts b/modules/core/src/classes/base/matrix.ts
index 35789b56..5a5cc1d2 100644
--- a/modules/core/src/classes/base/matrix.ts
+++ b/modules/core/src/classes/base/matrix.ts
@@ -1,5 +1,8 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
+
 import {NumericArray} from '@math.gl/types';
 import {MathArray} from './math-array';
 import {checkNumber} from '../../lib/validators';
diff --git a/modules/core/src/classes/base/vector.ts b/modules/core/src/classes/base/vector.ts
index 84a2932e..fbc21f56 100644
--- a/modules/core/src/classes/base/vector.ts
+++ b/modules/core/src/classes/base/vector.ts
@@ -1,5 +1,8 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
+
 import {NumericArray} from '@math.gl/types';
 import {MathArray} from './math-array';
 import {checkNumber} from '../../lib/validators';
diff --git a/modules/core/src/classes/euler.ts b/modules/core/src/classes/euler.ts
index 4bd2aa93..a564d660 100644
--- a/modules/core/src/classes/euler.ts
+++ b/modules/core/src/classes/euler.ts
@@ -1,5 +1,8 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
+
 import {MathArray} from './base/math-array';
 import {Quaternion} from './quaternion';
 import {NumericArray} from '@math.gl/types';
diff --git a/modules/core/src/classes/matrix3.ts b/modules/core/src/classes/matrix3.ts
index ed3929aa..2be038c4 100644
--- a/modules/core/src/classes/matrix3.ts
+++ b/modules/core/src/classes/matrix3.ts
@@ -1,5 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
 
 import {NumericArray} from '@math.gl/types';
 import {Matrix} from './base/matrix';
diff --git a/modules/core/src/classes/matrix4.ts b/modules/core/src/classes/matrix4.ts
index d05236aa..82392ad4 100644
--- a/modules/core/src/classes/matrix4.ts
+++ b/modules/core/src/classes/matrix4.ts
@@ -1,5 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
 
 import {NumericArray} from '@math.gl/types';
 import {Matrix} from './base/matrix';
diff --git a/modules/core/src/classes/pose.ts b/modules/core/src/classes/pose.ts
index 88eacc47..abb5aea9 100644
--- a/modules/core/src/classes/pose.ts
+++ b/modules/core/src/classes/pose.ts
@@ -1,5 +1,8 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
+
 import {Matrix4} from './matrix4';
 import {Vector3} from './vector3';
 import {Euler} from './euler';
diff --git a/modules/core/src/classes/quaternion.ts b/modules/core/src/classes/quaternion.ts
index d3b0b16d..ee59e037 100644
--- a/modules/core/src/classes/quaternion.ts
+++ b/modules/core/src/classes/quaternion.ts
@@ -1,5 +1,8 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
+
 import {NumericArray} from '@math.gl/types';
 import {MathArray} from './base/math-array';
 import {checkNumber, checkVector} from '../lib/validators';
diff --git a/modules/core/src/classes/spherical-coordinates.ts b/modules/core/src/classes/spherical-coordinates.ts
index cdc4c428..d862317d 100644
--- a/modules/core/src/classes/spherical-coordinates.ts
+++ b/modules/core/src/classes/spherical-coordinates.ts
@@ -1,5 +1,8 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
+
 // Adaptation of THREE.js Spherical class, under MIT license
 import {NumericArray} from '@math.gl/types';
 import {Vector3} from './vector3';
diff --git a/modules/core/src/classes/vector2.ts b/modules/core/src/classes/vector2.ts
index e805f9b7..2d58b1bd 100644
--- a/modules/core/src/classes/vector2.ts
+++ b/modules/core/src/classes/vector2.ts
@@ -1,5 +1,8 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
+
 import {Vector} from './base/vector';
 import {config, isArray} from '../lib/common';
 import {checkNumber} from '../lib/validators';
diff --git a/modules/core/src/classes/vector3.ts b/modules/core/src/classes/vector3.ts
index aa8f5424..21262fbe 100644
--- a/modules/core/src/classes/vector3.ts
+++ b/modules/core/src/classes/vector3.ts
@@ -1,5 +1,8 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
+
 import {NumericArray} from '@math.gl/types';
 import {Vector} from './base/vector';
 import {config, isArray} from '../lib/common';
diff --git a/modules/core/src/classes/vector4.ts b/modules/core/src/classes/vector4.ts
index a84611a3..1c4abd77 100644
--- a/modules/core/src/classes/vector4.ts
+++ b/modules/core/src/classes/vector4.ts
@@ -1,5 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
 
 import {NumericArray} from '@math.gl/types';
 /* eslint-disable camelcase */
diff --git a/modules/core/src/gl-matrix/wip/index.js b/modules/core/src/gl-matrix/wip/index.js
index 9138cdd7..3c764f2c 100644
--- a/modules/core/src/gl-matrix/wip/index.js
+++ b/modules/core/src/gl-matrix/wip/index.js
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 // @eslint-disable
 // @ts-nocheck
 
diff --git a/modules/core/src/gl-matrix/wip/mat2.js b/modules/core/src/gl-matrix/wip/mat2.js
index 01cd76f6..968aacd4 100644
--- a/modules/core/src/gl-matrix/wip/mat2.js
+++ b/modules/core/src/gl-matrix/wip/mat2.js
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 // @ts-nocheck
 /* eslint-disable */
 
diff --git a/modules/core/src/gl-matrix/wip/mat2d.js b/modules/core/src/gl-matrix/wip/mat2d.js
index 41a9ddec..6116652c 100644
--- a/modules/core/src/gl-matrix/wip/mat2d.js
+++ b/modules/core/src/gl-matrix/wip/mat2d.js
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 // @ts-nocheck
 /* eslint-disable */
 
diff --git a/modules/core/src/gl-matrix/wip/quat2.ts b/modules/core/src/gl-matrix/wip/quat2.ts
index 73f360ae..d6a9c8e7 100644
--- a/modules/core/src/gl-matrix/wip/quat2.ts
+++ b/modules/core/src/gl-matrix/wip/quat2.ts
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 // @ts-nocheck
 /* eslint-disable */
 import * as glMatrix from './common.js';
diff --git a/modules/core/src/index.ts b/modules/core/src/index.ts
index 7feac57c..5866f02b 100644
--- a/modules/core/src/index.ts
+++ b/modules/core/src/index.ts
@@ -1,4 +1,6 @@
-// luma.gl, MIT license
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 
 // types
 export type {TypedArray, TypedArrayConstructor, NumberArray, NumericArray} from '@math.gl/types';
diff --git a/modules/core/src/lib/assert.ts b/modules/core/src/lib/assert.ts
index e57f946c..47156426 100644
--- a/modules/core/src/lib/assert.ts
+++ b/modules/core/src/lib/assert.ts
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 export function assert(condition: unknown, message?: string): void {
   if (!condition) {
     throw new Error(`math.gl assertion ${message}`);
diff --git a/modules/core/src/lib/common.ts b/modules/core/src/lib/common.ts
index cc4c5fce..104d9517 100644
--- a/modules/core/src/lib/common.ts
+++ b/modules/core/src/lib/common.ts
@@ -1,4 +1,6 @@
-// math.gl, MIT license
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 
 import type {NumericArray} from '@math.gl/types';
 
diff --git a/modules/core/src/lib/gl-matrix-extras.ts b/modules/core/src/lib/gl-matrix-extras.ts
index 1305ecee..5417fff3 100644
--- a/modules/core/src/lib/gl-matrix-extras.ts
+++ b/modules/core/src/lib/gl-matrix-extras.ts
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 /* eslint-disable camelcase */
 import {NumericArray} from '@math.gl/types';
 // vec2 additions
diff --git a/modules/core/src/lib/gl-matrix.d.ts b/modules/core/src/lib/gl-matrix.d.ts
index f6f2d178..756c226c 100644
--- a/modules/core/src/lib/gl-matrix.d.ts
+++ b/modules/core/src/lib/gl-matrix.d.ts
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 type NumericArray =
   | Int8Array
   | Uint8Array
diff --git a/modules/core/src/lib/math-utils.ts b/modules/core/src/lib/math-utils.ts
index 5a09d003..f28ea7c5 100644
--- a/modules/core/src/lib/math-utils.ts
+++ b/modules/core/src/lib/math-utils.ts
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 // NOTE: Added to make Cesium-derived test cases work
 // TODO: Determine if/how to keep
 export const EPSILON1 = 1e-1;
diff --git a/modules/core/src/lib/validators.ts b/modules/core/src/lib/validators.ts
index 1b8c79d8..95b8aad1 100644
--- a/modules/core/src/lib/validators.ts
+++ b/modules/core/src/lib/validators.ts
@@ -1,22 +1,7 @@
-// Copyright (c) 2017 Uber Technologies, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 import {NumberArray} from '@math.gl/types';
 import {config} from './common';
 
diff --git a/modules/core/test/bench.ts b/modules/core/test/bench.ts
index 78cc8b87..71f49b88 100644
--- a/modules/core/test/bench.ts
+++ b/modules/core/test/bench.ts
@@ -1,22 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2015 - 2017 Uber Technologies, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 import javascriptBench from './lib/javascript.bench';
 import commonBench from './lib/common.bench';
diff --git a/modules/core/test/classes/classes.bench.ts b/modules/core/test/classes/classes.bench.ts
index ffd50f8a..2864d25a 100644
--- a/modules/core/test/classes/classes.bench.ts
+++ b/modules/core/test/classes/classes.bench.ts
@@ -1,22 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2015 - 2017 Uber Technologies, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 import {configure, Vector2, Vector3, Vector4, Matrix3, Matrix4} from '@math.gl/core';
 
diff --git a/modules/core/test/classes/euler.spec.ts b/modules/core/test/classes/euler.spec.ts
index 31a7c36d..de6a61b2 100644
--- a/modules/core/test/classes/euler.spec.ts
+++ b/modules/core/test/classes/euler.spec.ts
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 import {Euler, Matrix4, Quaternion, Pose} from '@math.gl/core';
 import test from 'tape-promise/tape';
 import {tapeEquals} from 'test/utils/tape-assertions';
diff --git a/modules/core/test/classes/matrix3.spec.ts b/modules/core/test/classes/matrix3.spec.ts
index 2b91fa03..d09d61cc 100644
--- a/modules/core/test/classes/matrix3.spec.ts
+++ b/modules/core/test/classes/matrix3.spec.ts
@@ -1,5 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
 
 /* eslint-disable max-statements */
 import {Matrix3, config} from '@math.gl/core';
diff --git a/modules/core/test/classes/matrix4.bench.ts b/modules/core/test/classes/matrix4.bench.ts
index bc8dfa30..4cb6b44a 100644
--- a/modules/core/test/classes/matrix4.bench.ts
+++ b/modules/core/test/classes/matrix4.bench.ts
@@ -1,22 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2015 - 2017 Uber Technologies, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 import {configure, Vector4, Matrix4, mat4} from '@math.gl/core';
 
diff --git a/modules/core/test/classes/matrix4.spec.ts b/modules/core/test/classes/matrix4.spec.ts
index 68487c81..d754b2b4 100644
--- a/modules/core/test/classes/matrix4.spec.ts
+++ b/modules/core/test/classes/matrix4.spec.ts
@@ -1,5 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
 
 /* eslint-disable max-statements */
 import {Matrix4, Vector3, config, configure} from '@math.gl/core';
diff --git a/modules/core/test/classes/pose.spec.ts b/modules/core/test/classes/pose.spec.ts
index 0b121a51..458a1e96 100644
--- a/modules/core/test/classes/pose.spec.ts
+++ b/modules/core/test/classes/pose.spec.ts
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 import test from 'tape-promise/tape';
 import {Matrix4, Vector3, equals} from '@math.gl/core';
 import {Euler, Pose} from '@math.gl/core';
diff --git a/modules/core/test/classes/quaternion.spec.ts b/modules/core/test/classes/quaternion.spec.ts
index 72abe6c5..b98c2a95 100644
--- a/modules/core/test/classes/quaternion.spec.ts
+++ b/modules/core/test/classes/quaternion.spec.ts
@@ -1,22 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the 'Software'), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 /* eslint-disable*/
 import test from 'tape-promise/tape';
diff --git a/modules/core/test/classes/spherical-coordinates.spec.ts b/modules/core/test/classes/spherical-coordinates.spec.ts
index 6ff80fc9..f51d0ee7 100644
--- a/modules/core/test/classes/spherical-coordinates.spec.ts
+++ b/modules/core/test/classes/spherical-coordinates.spec.ts
@@ -1,5 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
 
 /* eslint-disable max-statements, max-depth */
 import test from 'tape-promise/tape';
diff --git a/modules/core/test/classes/vector2.bench.ts b/modules/core/test/classes/vector2.bench.ts
index c313019d..f4d5e962 100644
--- a/modules/core/test/classes/vector2.bench.ts
+++ b/modules/core/test/classes/vector2.bench.ts
@@ -1,22 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2015 - 2017 Uber Technologies, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 import {Vector2} from '@math.gl/core';
 
diff --git a/modules/core/test/classes/vector2.spec.ts b/modules/core/test/classes/vector2.spec.ts
index cef17912..90f9dd2e 100644
--- a/modules/core/test/classes/vector2.spec.ts
+++ b/modules/core/test/classes/vector2.spec.ts
@@ -1,5 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
 
 /* eslint-disable max-statements */
 import test from 'tape-promise/tape';
diff --git a/modules/core/test/classes/vector3.bench.ts b/modules/core/test/classes/vector3.bench.ts
index ee34d758..3d2ba653 100644
--- a/modules/core/test/classes/vector3.bench.ts
+++ b/modules/core/test/classes/vector3.bench.ts
@@ -1,22 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2015 - 2017 Uber Technologies, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 import {Vector3} from '@math.gl/core';
 
diff --git a/modules/core/test/classes/vector3.spec.ts b/modules/core/test/classes/vector3.spec.ts
index b75f8b8c..f1057b1a 100644
--- a/modules/core/test/classes/vector3.spec.ts
+++ b/modules/core/test/classes/vector3.spec.ts
@@ -1,5 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
 
 /* eslint-disable max-statements */
 import test from 'tape-promise/tape';
diff --git a/modules/core/test/classes/vector4.bench.ts b/modules/core/test/classes/vector4.bench.ts
index 68a94192..b0a341c7 100644
--- a/modules/core/test/classes/vector4.bench.ts
+++ b/modules/core/test/classes/vector4.bench.ts
@@ -1,22 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2015 - 2017 Uber Technologies, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 import {Vector4} from '@math.gl/core';
 
diff --git a/modules/core/test/classes/vector4.spec.ts b/modules/core/test/classes/vector4.spec.ts
index 9ae40a62..7645e1af 100644
--- a/modules/core/test/classes/vector4.spec.ts
+++ b/modules/core/test/classes/vector4.spec.ts
@@ -1,5 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
 
 /* eslint-disable max-statements */
 import test from 'tape-promise/tape';
diff --git a/modules/core/test/classes/vectors.spec.ts b/modules/core/test/classes/vectors.spec.ts
index 5fb7ca7e..1640738c 100644
--- a/modules/core/test/classes/vectors.spec.ts
+++ b/modules/core/test/classes/vectors.spec.ts
@@ -1,5 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
 
 /* eslint-disable max-statements */
 import test, {Test} from 'tape-promise/tape';
diff --git a/modules/core/test/index.ts b/modules/core/test/index.ts
index 3399afb0..a98af83e 100644
--- a/modules/core/test/index.ts
+++ b/modules/core/test/index.ts
@@ -1,5 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
 
 import './lib/common.spec';
 
diff --git a/modules/core/test/lib/common.bench.ts b/modules/core/test/lib/common.bench.ts
index 8eeaf3e0..3ba517be 100644
--- a/modules/core/test/lib/common.bench.ts
+++ b/modules/core/test/lib/common.bench.ts
@@ -1,22 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2015 - 2017 Uber Technologies, Inc.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 import {Vector3, toRadians, radians} from '@math.gl/core';
 import {isArray} from '@math.gl/core';
diff --git a/modules/core/test/lib/common.spec.ts b/modules/core/test/lib/common.spec.ts
index 608b4d82..b3ebbd4f 100644
--- a/modules/core/test/lib/common.spec.ts
+++ b/modules/core/test/lib/common.spec.ts
@@ -1,5 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright (c) 2017 Uber Technologies, Inc.
-// MIT License
 
 import test, {Test} from 'tape-promise/tape';
 import {Vector2, Vector3, Pose, _MathUtils} from '@math.gl/core';
diff --git a/modules/core/test/lib/javascript.bench.ts b/modules/core/test/lib/javascript.bench.ts
index d3025f79..9765b748 100644
--- a/modules/core/test/lib/javascript.bench.ts
+++ b/modules/core/test/lib/javascript.bench.ts
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 // CLASS INHERITANCE
 //
 // This class identifies
diff --git a/modules/core/test/threejs-tests/constants.ts b/modules/core/test/threejs-tests/constants.ts
index eab43069..dfcca362 100644
--- a/modules/core/test/threejs-tests/constants.ts
+++ b/modules/core/test/threejs-tests/constants.ts
@@ -1,24 +1,7 @@
-// The MIT License
-//
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright © 2010-2018 three.js authors
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 // @author bhouston / http://exocortex.com
 
diff --git a/modules/core/test/threejs-tests/euler-three.spec.ts b/modules/core/test/threejs-tests/euler-three.spec.ts
index e9a5f942..ca4fdfab 100644
--- a/modules/core/test/threejs-tests/euler-three.spec.ts
+++ b/modules/core/test/threejs-tests/euler-three.spec.ts
@@ -1,24 +1,7 @@
-// The MIT License
-//
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright © 2010-2018 three.js authors
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 // This file was copied from THREE.js math test suite (MIT licensed)
 // Original authors:
diff --git a/modules/core/test/threejs-tests/index.ts b/modules/core/test/threejs-tests/index.ts
index 7408ab4f..1e2eb257 100644
--- a/modules/core/test/threejs-tests/index.ts
+++ b/modules/core/test/threejs-tests/index.ts
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 import './vector2-three.spec';
 import './vector3-three.spec';
 import './vector4-three.spec';
diff --git a/modules/core/test/threejs-tests/matrix3-three.spec.ts b/modules/core/test/threejs-tests/matrix3-three.spec.ts
index f7a8bfdb..43de3281 100644
--- a/modules/core/test/threejs-tests/matrix3-three.spec.ts
+++ b/modules/core/test/threejs-tests/matrix3-three.spec.ts
@@ -1,24 +1,7 @@
-// The MIT License
-//
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright © 2010-2018 three.js authors
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 // This file is copied from THREE.js math test suite (MIT licensed)
 // @author bhouston / http://exocortex.com
diff --git a/modules/core/test/threejs-tests/matrix4-three.spec.ts b/modules/core/test/threejs-tests/matrix4-three.spec.ts
index 0614546c..d03a115e 100644
--- a/modules/core/test/threejs-tests/matrix4-three.spec.ts
+++ b/modules/core/test/threejs-tests/matrix4-three.spec.ts
@@ -1,24 +1,7 @@
-// The MIT License
-//
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright © 2010-2018 three.js authors
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 // This file is copied from THREE.js math test suite (MIT licensed)
 // @author bhouston / http://exocortex.com
diff --git a/modules/core/test/threejs-tests/quaternion-three.spec.ts b/modules/core/test/threejs-tests/quaternion-three.spec.ts
index 9099c869..27bbcdb7 100644
--- a/modules/core/test/threejs-tests/quaternion-three.spec.ts
+++ b/modules/core/test/threejs-tests/quaternion-three.spec.ts
@@ -1,24 +1,7 @@
-// The MIT License
-//
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright © 2010-2018 three.js authors
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 // This file was copied from THREE.js math test suite (MIT licensed)
 // @author bhouston / http://exocortex.com
diff --git a/modules/core/test/threejs-tests/vector2-three.spec.ts b/modules/core/test/threejs-tests/vector2-three.spec.ts
index ec14a90a..c9c65fc9 100644
--- a/modules/core/test/threejs-tests/vector2-three.spec.ts
+++ b/modules/core/test/threejs-tests/vector2-three.spec.ts
@@ -1,24 +1,7 @@
-// The MIT License
-//
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright © 2010-2018 three.js authors
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 // This file is copied from THREE.js math test suite (MIT licensed)
 // @author bhouston / http://exocortex.com
diff --git a/modules/core/test/threejs-tests/vector3-three.spec.ts b/modules/core/test/threejs-tests/vector3-three.spec.ts
index 3ae1657c..e5d6914b 100644
--- a/modules/core/test/threejs-tests/vector3-three.spec.ts
+++ b/modules/core/test/threejs-tests/vector3-three.spec.ts
@@ -1,24 +1,7 @@
-// The MIT License
-//
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright © 2010-2018 three.js authors
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 // This file is copied from THREE.js math test suite (MIT licensed)
 // @author bhouston / http://exocortex.com
diff --git a/modules/core/test/threejs-tests/vector4-three.spec.ts b/modules/core/test/threejs-tests/vector4-three.spec.ts
index f8ca56ba..08726e1d 100644
--- a/modules/core/test/threejs-tests/vector4-three.spec.ts
+++ b/modules/core/test/threejs-tests/vector4-three.spec.ts
@@ -1,24 +1,7 @@
-// The MIT License
-//
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 // Copyright © 2010-2018 three.js authors
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
 
 // @author bhouston / http://exocortex.com
 // @author TristanVALCKE / https://github.com/Itee
diff --git a/modules/types/src/array-types.ts b/modules/types/src/array-types.ts
index 29f4e3b8..7917b7c2 100644
--- a/modules/types/src/array-types.ts
+++ b/modules/types/src/array-types.ts
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 /**
  * TypeScript type covering all typed arrays
  */
diff --git a/modules/types/src/bigint.ts b/modules/types/src/bigint.ts
index edfe88d0..7a304805 100644
--- a/modules/types/src/bigint.ts
+++ b/modules/types/src/bigint.ts
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 // BigInt compatibility layer
 // Inspired by ArrowJS (under Apache2 license)
 // https://github.com/apache/arrow/blob/master/js/src/util/compat.ts
diff --git a/modules/types/src/index.ts b/modules/types/src/index.ts
index 090eb9b1..5e0877d3 100644
--- a/modules/types/src/index.ts
+++ b/modules/types/src/index.ts
@@ -1,2 +1,6 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 export type {TypedArray, TypedArrayConstructor, NumericArray, NumberArray} from './array-types';
 export {isTypedArray, isNumericArray} from './is-array';
diff --git a/modules/types/src/is-array.ts b/modules/types/src/is-array.ts
index 4fccef01..f3d9ec87 100644
--- a/modules/types/src/is-array.ts
+++ b/modules/types/src/is-array.ts
@@ -1,3 +1,7 @@
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
 import {TypedArray, NumericArray} from './array-types';
 
 /**
diff --git a/modules/types/test/index.ts b/modules/types/test/index.ts
index d701ccb2..c7fcbd9a 100644
--- a/modules/types/test/index.ts
+++ b/modules/types/test/index.ts
@@ -1,3 +1,5 @@
-// math.gl, MIT license
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 
 import './is-array.spec';
diff --git a/modules/types/test/is-array.spec.ts b/modules/types/test/is-array.spec.ts
index 0fdc1b38..4f4eebbf 100644
--- a/modules/types/test/is-array.spec.ts
+++ b/modules/types/test/is-array.spec.ts
@@ -1,4 +1,6 @@
-// math.gl, MIT license
+// math.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
 
 import test from 'tape-promise/tape';
 import {isTypedArray, isNumericArray} from '@math.gl/types';