diff --git a/.github/workflows/CI-mac-x86_64.yml b/.github/workflows/CI-mac-x86_64.yml
index 596b8e73d..507c3eb7f 100644
--- a/.github/workflows/CI-mac-x86_64.yml
+++ b/.github/workflows/CI-mac-x86_64.yml
@@ -37,7 +37,7 @@ jobs:
         PKG_CONFIG_PATH: "/usr/local/opt/zlib/lib/pkgconfig"
       uses: "gabrielfalcao/pyenv-action@v5"
       with:
-          default: 3.6.9
+          default: 3.7.17
         
     - name: Install pip dependencies
       run: |