diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5991f0c..d3d4c38 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,7 +8,7 @@ jobs:
       fail-fast: false
       matrix:
         # Tested versions based on dates in https://devguide.python.org/versions/#versions
-        python-version: [${{fromJson(secrets.PYTHON_VERSIONS_ACTIVE)}}]
+        python-version: ${{fromJson(secrets.PYTHON_VERSIONS_ACTIVE)}}
     steps:
       - uses: actions/checkout@v2
       - name: Setup python