diff --git a/.github/.keepalive b/.github/.keepalive
deleted file mode 100644
index 1459acf..0000000
--- a/.github/.keepalive
+++ /dev/null
@@ -1 +0,0 @@
-2024-04-01T01:41:41.594Z
diff --git a/.github/workflows/test_coverage.yml b/.github/workflows/test_coverage.yml
index f5410dd..f4eda1e 100644
--- a/.github/workflows/test_coverage.yml
+++ b/.github/workflows/test_coverage.yml
@@ -84,11 +84,13 @@ jobs:
       - name: 'Upload coverage to Codecov'
         id: upload
         # Pin action to full length commit SHA
-        uses: codecov/codecov-action@eaaf4bedf32dbdc6b720b63067d99c4d77d6047d # v3.1.4
+        uses: codecov/codecov-action@84508663e988701840491b86de86b666e8a86bed # v4.3.0
         with:
           directory: reports/coverage
           flags: unittests
           fail_ci_if_error: true
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
       # Extract coverage value:
       - name: 'Extract coverage value and assign to output'