diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index da9f0e5..0ef7bb1 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -15,13 +15,11 @@ jobs:
         uses: actions/cache@v1
         with:
           path: ~/.cargo/registry
-          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
 
       - name: Cache cargo index
         uses: actions/cache@v1
         with:
           path: ~/.cargo/git
-          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
 
       - name: Build mdbook
         run: cargo install mdbook