diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index aa3ddf4..a9d0db9 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -28,7 +28,7 @@ jobs:
             ~/.cargo/registry/cache/
             ~/.cargo/git/db/
             target/
-          key: ${{ runner.os }}-${{ matrix.target }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          key: ${{ runner.os }}-${{ matrix.target }}-cargo-${{ hashFiles('Cargo.lock') }}
       - uses: mamba-org/setup-micromamba@v1
         with:
           environment-name: ci
@@ -72,7 +72,7 @@ jobs:
             ~/.cargo/registry/cache/
             ~/.cargo/git/db/
             target/
-          key: ${{ runner.os }}-${{ matrix.target }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          key: ${{ runner.os }}-${{ matrix.target }}-cargo-${{ hashFiles('Cargo.lock') }}
       - uses: mamba-org/setup-micromamba@v1
         with:
           environment-name: ci
@@ -115,7 +115,7 @@ jobs:
             ~/.cargo/registry/cache/
             ~/.cargo/git/db/
             target/
-          key: ${{ runner.os }}-${{ matrix.target }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          key: ${{ runner.os }}-${{ matrix.target }}-cargo-${{ hashFiles('Cargo.lock') }}
       - uses: mamba-org/setup-micromamba@v1
         with:
           environment-name: ci