diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d2f56d783a..628991c115 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,6 +12,10 @@ on:
       - '*.md'
       - 'lib/fluent/version.rb'
 
+concurrency:
+  group: ${{ github.head_ref || github.sha }}-${{ github.workflow }}
+  cancel-in-progress: true
+
 jobs:
   test:
     runs-on: ${{ matrix.os }}