diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index 8329b44..ff7e85c 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.10]
+        python-version: ["3.10"]
         poetry-version: ["1.1.15"]
 
     steps: