diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index c99b4367b..5a7fd41f7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -199,7 +199,16 @@ jobs:
       - name: Set up Python ${{ matrix.python-version }}
         if: endsWith(matrix.python-version, 't')
         run: |
-          uv python install ${{ matrix.python-version }}
+          uv python install ${IMPL}-${VERSION}-${OS%-*}-${ARCH}-${LIBC}
+        env:
+          IMPL: cpython
+          VERSION: ${{ matrix.python-version }}
+          # uv expects linux|macos|windows, we can drop the -* but need to rename ubuntu
+          OS: ${{ matrix.os == 'ubuntu-latest' ? 'linux' : matrix.os }}
+          # uv expects x86, x86_64, aarch64 (among others)
+          ARCH: ${{ fromJSON('{"x86": "x86", "x64": "x86_64", "arm64": "aarch64"}')[matrix.architecture] }}
+          # windows and macos have no options, gnu is the only option for the archs
+          LIBC: ${{ matrix.os == 'ubuntu-latest' ? 'gnu' : 'none' }}
       - name: Display Python version
         run: python -c "import sys; print(sys.version)"
       - name: Install tox