diff --git a/.github/actions/docker-build-and-push/action.yaml b/.github/actions/docker-build-and-push/action.yaml
index bcd59551fef..25b482bce2b 100644
--- a/.github/actions/docker-build-and-push/action.yaml
+++ b/.github/actions/docker-build-and-push/action.yaml
@@ -49,7 +49,7 @@ runs:
       with:
         path: |
           root-ccache
-        key: cache-${{ inputs.platform }}-${{ inputs.name }}-${{ hashFiles('autoware.repos') }}
+        key: cache-${{ inputs.platform }}-${{ inputs.name }}-${{ hashFiles('src/**/*.cpp') }}
         restore-keys: |
           cache-${{ inputs.platform }}-${{ inputs.name }}-
           cache-${{ inputs.platform }}-
diff --git a/.github/actions/docker-build/action.yaml b/.github/actions/docker-build/action.yaml
index 147a1a75cf5..7b36ab426a9 100644
--- a/.github/actions/docker-build/action.yaml
+++ b/.github/actions/docker-build/action.yaml
@@ -41,7 +41,7 @@ runs:
       with:
         path: |
           root-ccache
-        key: cache-${{ inputs.platform }}-${{ inputs.name }}-${{ hashFiles('autoware.repos') }}
+        key: cache-${{ inputs.platform }}-${{ inputs.name }}-${{ hashFiles('src/**/*.cpp') }}
         restore-keys: |
           cache-${{ inputs.platform }}-${{ inputs.name }}-
           cache-${{ inputs.platform }}-
@@ -52,7 +52,7 @@ runs:
       with:
         path: |
           root-ccache
-        key: cache-${{ matrix.platform }}-${{ matrix.name }}-${{ hashFiles('autoware.repos') }}
+        key: cache-${{ matrix.platform }}-${{ matrix.name }}-${{ hashFiles('src/**/*.cpp') }}
         restore-keys: |
           cache-${{ matrix.platform }}-${{ matrix.name }}-
           cache-${{ matrix.platform }}-