diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index 94c2249b..2ac44591 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -11,10 +11,14 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, ubuntu-20.04]
-        python-version: [3.8, 3.11, pypy-3.7]
+        python-version: [3.8, 3.11]
         include:
           - os: ubuntu-20.04
             python-version: 3.6
+          - os: ubuntu-20.04
+            python-version: pypy-3.7
+          - os: macos-latest
+            python-version: pypy-3.8
     steps:
       - uses: actions/checkout@v2
       - name: Setup Python environment