diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index ca2a3f3..b3147d0 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -55,7 +55,7 @@ jobs:
   MacOS:
     runs-on: macos-11
     env:
-      MACOSX_DEPLOYMENT_TARGET: 11.0
+      MACOSX_DEPLOYMENT_TARGET: 10.9
 
     steps:
     - uses: actions/checkout@v3