diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index b8415a34..4f30fca8 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -50,11 +50,11 @@ jobs:
       - name: Install cargo-llvm-cov
         run: |
           rustup component add llvm-tools-preview
-          cargo install cargo-llvm-cov --version 0.4.8 --locked
+          cargo install cargo-llvm-cov --version 0.5.9 --locked
 
       - name: Generate code coverage
         run: |
-          cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info
+          cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info --locked
 
       - name: Upload to codecov.io
         uses: codecov/codecov-action@d9f34f8cd5cb3b3eb79b3e4b5dae3a16df499a70 # 3.1.1