diff --git a/demo/demo.ts b/demo/demo.ts
index e45c1a4..2676090 100644
--- a/demo/demo.ts
+++ b/demo/demo.ts
@@ -1,4 +1,4 @@
-// ? run "pnpm tsx demo.ts" in the terminal to see the output
+// ? run "pnpm tsx demo" in the terminal to see the output
 
 import { evaluate, parse } from 'cel-js'
 
diff --git a/demo/package.json b/demo/package.json
index 8b06ef8..11d264d 100644
--- a/demo/package.json
+++ b/demo/package.json
@@ -4,7 +4,7 @@
   "description": "A simple usage of the CEL library",
   "type": "module",
   "dependencies": {
-    "cel-js": "0.1.2"
+    "cel-js": "0.1.3"
   },
   "devDependencies": {
     "tsx": "4.7.0"
diff --git a/demo/pnpm-lock.yaml b/demo/pnpm-lock.yaml
index 2cfd901..f574cef 100644
--- a/demo/pnpm-lock.yaml
+++ b/demo/pnpm-lock.yaml
@@ -6,8 +6,8 @@ settings:
 
 dependencies:
   cel-js:
-    specifier: 0.1.2
-    version: 0.1.2
+    specifier: 0.1.3
+    version: 0.1.3
 
 devDependencies:
   tsx:
@@ -250,8 +250,8 @@ packages:
     dev: true
     optional: true
 
-  /cel-js@0.1.2:
-    resolution: {integrity: sha512-SX0hlAjzZf2D6JGFoMcQX86VIy5gxEZ0/mzQxK0hRn/bSoM/qL7WZ6QcdybNYXgl0iSsDE5M/EIACJd+rgcshw==}
+  /cel-js@0.1.3:
+    resolution: {integrity: sha512-vHe2q1mbkLplKpOybOMo4Cy8OYTMeN8z3yrQXnPijRx6/Lpwt8TP0LKuPfaxOKbY+sclJUNuTEO5/Lf6BjFbpw==}
     engines: {node: '>=18.0.0'}
     dependencies:
       chevrotain: 11.0.3
diff --git a/src/parser.ts b/src/parser.ts
index 15e8e52..cedde8a 100644
--- a/src/parser.ts
+++ b/src/parser.ts
@@ -19,6 +19,7 @@ import {
   Dot,
   CloseBracket,
   OpenBracket,
+  Comma,
 } from './tokens.js'
 
 export class CelParser extends CstParser {
@@ -91,7 +92,7 @@ export class CelParser extends CstParser {
         { ALT: () => this.SUBRULE(this.identifierDotExpression) },
         { ALT: () => this.SUBRULE(this.identifierIndexExpression) },
       ])
-    })  
+    })
   })
 
   private identifierDotExpression = this.RULE('identifierDotExpression', () => {
@@ -108,6 +109,18 @@ export class CelParser extends CstParser {
     }
   )
 
+  private arrayExpression = this.RULE('arrayExpression', () => {
+    this.CONSUME(OpenBracket)
+    this.OPTION(() => {
+      this.SUBRULE(this.expr)
+      this.MANY(() => {
+        this.CONSUME(Comma)
+        this.SUBRULE2(this.expr)
+      })
+    })
+    this.CONSUME(CloseBracket)
+  })
+
   private atomicExpression = this.RULE('atomicExpression', () => {
     this.OR([
       { ALT: () => this.SUBRULE(this.parenthesisExpression) },
diff --git a/src/tokens.ts b/src/tokens.ts
index 72942f4..49eb4c2 100644
--- a/src/tokens.ts
+++ b/src/tokens.ts
@@ -21,6 +21,7 @@ export const OpenBracket = createToken({ name: 'OpenBracket', pattern: /\[/ })
 export const CloseBracket = createToken({ name: 'CloseBracket', pattern: /\]/ })
 
 export const Dot = createToken({ name: 'Dot', pattern: /\./ })
+export const Comma = createToken({ name: 'Comma', pattern: /,/ })
 
 export const Float = createToken({
   name: 'Float',
@@ -196,6 +197,7 @@ export const allTokens = [
   OpenBracket,
   CloseBracket,
   Dot,
+  Comma,
 
   Float,
   Integer,