diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index dcd9eb45..04dbc566 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -113,8 +113,6 @@ jobs:
           python setup.py test
   coverage:
     runs-on: ubuntu-20.04
-    env:
-      CODECOV_TOKEN: fa818d5d-2c4d-417f-b994-37f71b3d8ee9
     steps:
     - uses: actions/checkout@master
     - name: Setup Python
@@ -137,8 +135,9 @@ jobs:
     - name: Generate coverage report
       run: |
         python3 -m pytest tests --cov=tests/dendropy --cov-report=xml
-    - uses: codecov/codecov-action@v3
+    - uses: codecov/codecov-action@v4
       with:
+        token: fa818d5d-2c4d-417f-b994-37f71b3d8ee9
         flags: unittests # optional
         fail_ci_if_error: true # optional (default = false)
         verbose: true # optional (default = false)