diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dddcaa940a..a817b6cd9f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
         with:
           path: |
             build
-          key: ${{ runner.os }}-${{ runner.arch }}-cmake-build-${{ github.sha }}
+          key: ${{ runner.os }}-${{ runner.arch }}-cmake-build-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
           restore-keys: |
             ${{ runner.os }}-${{ runner.arch }}-cmake-build-
       - name: Install dependencies
@@ -54,7 +54,7 @@ jobs:
         with:
           path: |
             build
-          key: ${{ runner.os }}-${{ runner.arch }}-cmake-build-${{ github.sha }}
+          key: ${{ runner.os }}-${{ runner.arch }}-cmake-build-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
           restore-keys: |
             ${{ runner.os }}-${{ runner.arch }}-cmake-build-
       - name: Install dependencies
@@ -89,7 +89,7 @@ jobs:
         with:
           path: |
             build
-          key: ${{ runner.os }}-${{ runner.arch }}-cmake-build-${{ github.sha }}
+          key: ${{ runner.os }}-${{ runner.arch }}-cmake-build-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
           restore-keys: |
             ${{ runner.os }}-${{ runner.arch }}-cmake-build-
       - name: Install dependencies
@@ -112,7 +112,7 @@ jobs:
         with:
           path: |
             build
-          key: ${{ runner.os }}-${{ runner.arch }}-cmake-build-${{ github.sha }}
+          key: ${{ runner.os }}-${{ runner.arch }}-cmake-build-${{ hashFiles('**/CMakeLists.txt', '**/*.cmake') }}
           restore-keys: |
             ${{ runner.os }}-${{ runner.arch }}-cmake-build-
       - name: Install dependencies