diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index 490a5edec..6507a6203 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -10,7 +10,10 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-20.04]
-        python: [3.6,3.7,3.8]
+        python: 
+          - 3.6
+          - 3.7
+          - 3.8
     steps:
       - uses: actions/checkout@v2
       - name: Install python version