diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index efb3970..b4f9aa8 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -17,19 +17,19 @@ jobs:
           python-version: 3.12
           architecture: x64
       - uses: dtolnay/rust-toolchain@nightly
-      - name: Build wheels - x86_64
+      - name: Build wheels
         uses: messense/maturin-action@v1
         with:
-          target: x86_64
-          args: --release --out dist --sdist
+          target: universal2-apple-darwin
+          args: --release --out dist
           sccache: true
-      - name: Build wheels - universal2
+      - name: Build free-threaded wheels
         uses: messense/maturin-action@v1
         with:
           target: universal2-apple-darwin
-          args: --release --out dist
+          args: --release --out dist -i python3.13t
           sccache: true
-      - name: Install built wheel - universal2
+      - name: Install built wheel
         run: |
           pip install nh3 --no-index --find-links dist --force-reinstall
           pip install pytest
@@ -57,6 +57,11 @@ jobs:
         with:
           target: ${{ matrix.target }}
           args: --release --out dist
+      - name: Build free-threaded wheels
+        uses: messense/maturin-action@v1
+        with:
+          target: ${{ matrix.target }}
+          args: --release --out dist -i python3.13t
       - name: Install built wheel
         run: |
           pip install nh3 --no-index --find-links dist --force-reinstall
@@ -87,6 +92,14 @@ jobs:
         manylinux: auto
         args: --release --out dist
         sccache: true
+    - name: Build free-threaded wheels
+      uses: messense/maturin-action@v1
+      with:
+        rust-toolchain: nightly
+        target: ${{ matrix.target }}
+        manylinux: auto
+        args: --release --out dist -i python3.13t
+        sccache: true
     - name: Install built wheel
       if: matrix.target == 'x86_64'
       run: |
@@ -117,6 +130,14 @@ jobs:
         manylinux: auto
         args: --release --out dist
         sccache: true
+    - name: Build free-threaded wheels
+      uses: messense/maturin-action@v1
+      with:
+        rust-toolchain: nightly
+        target: ${{ matrix.target }}
+        manylinux: auto
+        args: --release --out dist -i python3.13
+        sccache: true
     - uses: uraimo/run-on-arch-action@v2.8.1
       if: matrix.target != 'ppc64'
       name: Install built wheel
@@ -157,6 +178,13 @@ jobs:
         manylinux: musllinux_1_2
         args: --release --out dist
         sccache: true
+    - name: Build free-threaded wheels
+      uses: messense/maturin-action@v1
+      with:
+        target: ${{ matrix.target }}
+        manylinux: musllinux_1_2
+        args: --release --out dist -i python3.13t
+        sccache: true
     - name: Install built wheel
       if: matrix.target == 'x86_64-unknown-linux-musl'
       uses: addnab/docker-run-action@v3
@@ -197,6 +225,13 @@ jobs:
         manylinux: musllinux_1_2
         args: --release --out dist
         sccache: true
+    - name: Build free-threaded wheels
+      uses: messense/maturin-action@v1
+      with:
+        target: ${{ matrix.platform.target }}
+        manylinux: musllinux_1_2
+        args: --release --out dist -i python3.13t
+        sccache: true
     - uses: uraimo/run-on-arch-action@v2.8.1
       name: Install built wheel
       with:
diff --git a/.readthedocs.yml b/.readthedocs.yml
index ef69a0c..ff14310 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -9,7 +9,7 @@ build:
   os: "ubuntu-22.04"
   tools:
     python: "3.12"
-    rust: "1.70"
+    rust: "1.82"
 
 python:
   install:
diff --git a/Cargo.lock b/Cargo.lock
index 8a404cb..6cf264c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -33,6 +33,15 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
+[[package]]
+name = "cc"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd9de9f2205d5ef3fd67e685b0df337994ddd4495e2a28d185500d0e1edfea47"
+dependencies = [
+ "shlex",
+]
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -469,6 +478,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3015cf985888fe66cfb63ce0e321c603706cd541b7aec7ddd35c281390af45d8"
 dependencies = [
  "once_cell",
+ "python3-dll-a",
  "target-lexicon",
 ]
 
@@ -507,6 +517,15 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "python3-dll-a"
+version = "0.2.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd0b78171a90d808b319acfad166c4790d9e9759bbc14ac8273fe133673dd41b"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.37"
@@ -581,6 +600,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
 [[package]]
 name = "siphasher"
 version = "0.3.11"
diff --git a/Cargo.toml b/Cargo.toml
index 2366598..6df1ef2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,4 +15,4 @@ crate-type = ["cdylib"]
 
 [dependencies]
 ammonia = "4.0.0"
-pyo3 = { version = "0.23.2", features = ["abi3-py38"] }
+pyo3 = { version = "0.23.2", features = ["abi3-py38", "generate-import-lib"] }