diff --git a/.github/workflows/benchmarks-pages.yaml b/.github/workflows/benchmarks-pages.yaml
index 3672b6c2c..4625dd88d 100644
--- a/.github/workflows/benchmarks-pages.yaml
+++ b/.github/workflows/benchmarks-pages.yaml
@@ -25,7 +25,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: ./cache
-          key: ${{ runner.os }}-benchmark
+          key: ${{ runner.os }}-${{github.event.pull_request.base.ref}}-benchmark
       - name: Store benchmark result
         uses: benchmark-action/github-action-benchmark@v1
         with:
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 29f73ae76..5fb3258e6 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -123,7 +123,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: ./cache
-          key: ${{ runner.os }}-benchmark
+          key: ${{ runner.os }}-${{github.event.pull_request.base.ref}}-benchmark
       - name: Store benchmark result
         uses: benchmark-action/github-action-benchmark@v1
         with:
@@ -149,7 +149,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: ./cache
-          key: ${{ runner.os }}-benchmark
+          key: ${{ runner.os }}-${{github.event.pull_request.base.ref}}-benchmark
       - name: Store benchmark result
         uses: benchmark-action/github-action-benchmark@v1
         with: