diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 49bf6c9..4066f99 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -29,7 +29,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: '3.10'
+        python: ['3.10']
         # python: ['3.7', '3.10']
         # task: # --show-capture=no on purpose
         #   - name: Test