diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index 217750ea3..f483df3a5 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -99,7 +99,7 @@ jobs:
         run: py.test --cov=./ --cov-report=xml
 
       - name: Upload test coverage to Codecov
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v4.5.0
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}