diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml
index 19393119..a2cd8f1d 100644
--- a/.github/workflows/bench.yml
+++ b/.github/workflows/bench.yml
@@ -6,7 +6,7 @@ jobs:
     name: run benchmark
     runs-on: ubuntu-latest
     env:
-      RUSTC_VERSION: 1.77.0
+      RUSTC_VERSION: 1.78.0
     steps:
     - uses: actions/checkout@v4
     - name: Checkout base branch