diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 52d64b4..50bde25 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -93,7 +93,7 @@ jobs:
       fail-fast: false
       matrix:
         target: [x86_64, x86, aarch64, armv7, s390x, ppc64le, ppc64, i686]
-        python_version: ['3.10', 'pypy-3.7', 'pypy-3.8', 'pypy-3.9', 'pypy-3.10']
+        python_version: ['3.10', 'pypy-3.7', 'pypy-3.8', 'pypy-3.9', 'pypy-3.10', '3.13t']
         manylinux: ['auto', 'musllinux_1_1']
         exclude:
           - manylinux: musllinux_1_1
@@ -106,13 +106,21 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
+        if: matrix.python_version != '3.13t'
         with:
           python-version: ${{ matrix.python_version }}
+      - uses: Quansight-Labs/setup-python@v5
+        if: matrix.python_version == '3.13t'
+        with:
+          python-version: '3.13t'
+      - name: FreeThreaded Patch
+        if: matrix.python_version == '3.13t'
+        run: git apply freethreaded.patch
       - name: Build wheels
         uses: PyO3/maturin-action@v1
         with:
           target: ${{ matrix.target }}
-          args: --release --out dist --interpreter ${{ matrix.python_version }}
+          args: --release --out dist -i ${{ matrix.python_version }}
           sccache: 'true'
           manylinux: ${{ matrix.manylinux }}
       - name: Upload wheels