diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml
index 344a0f6..3e2e664 100644
--- a/.github/workflows/bench.yml
+++ b/.github/workflows/bench.yml
@@ -18,11 +18,10 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
-          - '2.5'
-          - '2.6'
           - '2.7'
           - '3.0'
           - '3.1'
+          - '3.2'
     steps:
       - uses: actions/checkout@v2
       - name: Set up Ruby