diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index b2624e6e..8156b990 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -53,7 +53,7 @@ jobs:
         pytest --cov=myst_parser --cov-report=xml --cov-report=term-missing
         coverage xml
     - name: Upload to Codecov
-      if: github.repository == 'executablebooks/MyST-Parser' && python-version == 3.8
+      if: github.repository == 'executablebooks/MyST-Parser' && matrix.python-version == 3.8
       uses: codecov/codecov-action@v1
       with:
         name: myst-parser-pytests