diff --git a/.github/workflows/docker-test.yml b/.github/workflows/docker-test.yml
index c6f6b47..87fe652 100644
--- a/.github/workflows/docker-test.yml
+++ b/.github/workflows/docker-test.yml
@@ -15,7 +15,7 @@ jobs:
       contents: read
     strategy:
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
     - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8  # v5.0.0