diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9cef1028..9540265d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,12 +6,13 @@ on:
       - main
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}-${{ github.event.pull_request.merged }}
   cancel-in-progress: true
 
 jobs:
   build:
     runs-on: ubuntu-24.04
+    if: github.event.pull_request.merged == false
     steps:
       - uses: actions/checkout@v4
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index cd124f4f..32b62471 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -6,12 +6,13 @@ on:
       - main
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}-${{ github.event.pull_request.merged }}
   cancel-in-progress: true
 
 jobs:
   test:
     runs-on: ubuntu-24.04
+    if: github.event.pull_request.merged == false
     steps:
       - uses: actions/checkout@v4