diff --git a/.github/workflows/build-darwin.yml b/.github/workflows/build-darwin.yml
index 2b9f608..11a0c28 100644
--- a/.github/workflows/build-darwin.yml
+++ b/.github/workflows/build-darwin.yml
@@ -67,7 +67,7 @@ jobs:
         run: |
           python -m cibuildwheel --output-dir wheelhouse
         env:
-          CIBW_SKIP: cp27-* pp*
+          CIBW_BUILD: cp36-* cp37-* cp38-* cp39-*
 
       - uses: actions/upload-artifact@v1
         if: contains(github.ref, 'tags/')
diff --git a/.github/workflows/build-linux.yml b/.github/workflows/build-linux.yml
index 4cf70bb..1182d03 100644
--- a/.github/workflows/build-linux.yml
+++ b/.github/workflows/build-linux.yml
@@ -67,7 +67,7 @@ jobs:
         run: |
           python -m cibuildwheel --output-dir wheelhouse
         env:
-          CIBW_SKIP: cp27-* pp*
+          CIBW_BUILD: cp36-* cp37-* cp38-* cp39-*
 
       - uses: actions/upload-artifact@v1
         if: contains(github.ref, 'tags/')
diff --git a/.github/workflows/build-windows.yml b/.github/workflows/build-windows.yml
index ebd0975..9c2ee2d 100644
--- a/.github/workflows/build-windows.yml
+++ b/.github/workflows/build-windows.yml
@@ -85,7 +85,7 @@ jobs:
         run: |
           python -m cibuildwheel --output-dir wheelhouse
         env:
-          CIBW_SKIP: cp27-* pp*
+          CIBW_BUILD: cp36-* cp37-* cp38-* cp39-*
 
       - uses: actions/upload-artifact@v1
         if: contains(github.ref, 'tags/')