diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b755db8..24b3bb6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,7 +30,7 @@ jobs:
             ~/.cargo/registry/index/
             ~/.cargo/registry/cache/
             ~/.cargo/git/db/
-          key: ${{ runner.os }}-cargo-${{ hashFiles('.github/workflows/ci.yml', 'cast_checks/tests/ci.rs') }}
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
 
       - name: Install tools
         run: |