diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 04ccb3e..c79946a 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -48,6 +48,7 @@ jobs:
       - name: Run tests
         run: |
           cd ${{ matrix.folder }}
+          pip install build
           python -m build
       - name: Upload packages
         uses: actions/upload-artifact@v4