diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9bad1bf6..2e89a43e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, ubuntu-latest, macos-latest]
-        python-version: [3.9, '3.10', 3.11]
+        python-version: ['3.10', 3.11, 3.12]
 
     steps:
     - uses: actions/checkout@v4