diff --git a/.github/workflows/build-arm64-wheels.yml b/.github/workflows/build-arm64-wheels.yml
index 69b48ebac..c21618d42 100644
--- a/.github/workflows/build-arm64-wheels.yml
+++ b/.github/workflows/build-arm64-wheels.yml
@@ -44,7 +44,7 @@ jobs:
         USE_FEATURES=$(./support/feature-fishing.py)
         echo "USE_FEATURES=${USE_FEATURES}" >> "$GITHUB_ENV"
         export
-        CC=gcc maturin build --release --strip --manylinux 2014 "--features=${USE_FEATURES}"
+        CC=gcc maturin build --release --strip --manylinux 2014 "--features=extension-module,${USE_FEATURES}"
     - name: Upload artifacts
       uses: actions/upload-artifact@v3
       with:
diff --git a/.github/workflows/build-m1-wheel.yml b/.github/workflows/build-m1-wheel.yml
index 186b4f4b9..25260e28a 100644
--- a/.github/workflows/build-m1-wheel.yml
+++ b/.github/workflows/build-m1-wheel.yml
@@ -109,7 +109,7 @@ jobs:
       run: |
         . ./venv/bin/activate
         cd clvm_tools_rs
-        arch -arm64 cargo test --features="${USE_FEATURES}"
+        arch -arm64 cargo test --features="extension-module,${USE_FEATURES}"
 
     - name: Upload wheels
       uses: actions/upload-artifact@v3