diff --git a/.github/workflows/test-build-publish.yml b/.github/workflows/test-build-publish.yml
index 0377d2722..30be574a1 100644
--- a/.github/workflows/test-build-publish.yml
+++ b/.github/workflows/test-build-publish.yml
@@ -51,7 +51,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.10, 3.11]
+        python-version: ['3.10', '3.11']
 
     steps:
       - name: Checkout kapitan recursively