diff --git a/.github/workflows/pypi.yml b/.github/workflows/pypi.yml
index 6fd60f2..eca6468 100644
--- a/.github/workflows/pypi.yml
+++ b/.github/workflows/pypi.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: 3.6
+        python-version: [3.6]
 
     steps:
     - uses: actions/checkout@v1