diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 00e16d94..c74f6078 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -43,7 +43,7 @@ jobs:
       - name: Install cargo-llvm-cov
         run: |
           rustup component add llvm-tools-preview
-          cargo install cargo-llvm-cov --version 0.3.0
+          cargo install cargo-llvm-cov --version 0.3.0 --locked
 
       - name: Generate code coverage
         run: |