diff --git a/.github/workflows/unit-test.yml b/.github/workflows/unit-test.yml
index b615d169..e747e9df 100644
--- a/.github/workflows/unit-test.yml
+++ b/.github/workflows/unit-test.yml
@@ -71,6 +71,7 @@ jobs:
     strategy:
       matrix:
         python-version: [
+          ["3.9", "39"],
           ["3.10", "310"],
           ["3.11", "311"],
           ["3.12", "312"],