diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d75a850c..4c0288f5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,6 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
+        python_version: ['3.12', '3.11', '3.10', '3.9']
         include:
           - python_version: '3.12'
             documentation: 0