diff --git a/.github/workflows/testing.yaml b/.github/workflows/testing.yaml
index ea51b5b..7f71109 100644
--- a/.github/workflows/testing.yaml
+++ b/.github/workflows/testing.yaml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.11", "3.12" ]
+        python-version: [ "3.9", "3.10", "3.11", "3.12" ]
         fastapi-version: [ "0.103.2", "0.111.1"]
     steps:
       - name: Check out repository