diff --git a/.github/workflows/nucypher-core.yml b/.github/workflows/nucypher-core.yml
index d983a27..c59e9f0 100644
--- a/.github/workflows/nucypher-core.yml
+++ b/.github/workflows/nucypher-core.yml
@@ -172,7 +172,7 @@ jobs:
       - name: Generate code coverage
         run: cargo llvm-cov --workspace --lcov --output-path lcov.info --all-features
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
           files: lcov.info
           fail_ci_if_error: true