diff --git a/.github/workflows/test_on_push_and_pull.yml b/.github/workflows/test_on_push_and_pull.yml
index 5c497e5..5cad9eb 100644
--- a/.github/workflows/test_on_push_and_pull.yml
+++ b/.github/workflows/test_on_push_and_pull.yml
@@ -48,7 +48,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest","ubuntu-20.04", "macos-latest","macos-13","macos-12", "windows-latest","windows-2019"]
-        python-numpy-version: [ [python:3.9,numpy:1.25], [python:3.9,numpy:1.26],[python:3.9,numpy:2.0]]        
+        python-numpy-version: [ {python:3.9,numpy:1.25}, {python:3.9,numpy:1.26},{python:3.9,numpy:2.0}]        
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python 3.10