diff --git a/.github/workflows/crypto-primes.yml b/.github/workflows/crypto-primes.yml
index 8d1a667..e4e060e 100644
--- a/.github/workflows/crypto-primes.yml
+++ b/.github/workflows/crypto-primes.yml
@@ -46,8 +46,9 @@ jobs:
       - name: Generate code coverage
         run: cargo llvm-cov --workspace --lcov --output-path lcov.info
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
+          token: ${{ secrets.CODECOV_TOKEN }}
           files: lcov.info
           fail_ci_if_error: true