diff --git a/.github/workflows/auto-merge.yml b/.github/workflows/auto-merge.yml
new file mode 100644
index 0000000000..58b40697c8
--- /dev/null
+++ b/.github/workflows/auto-merge.yml
@@ -0,0 +1,36 @@
+name: Auto-merge
+
+on:
+  workflow_run:
+    workflows: [E2E testing for EC-CUBE]
+    types: [completed]
+
+jobs:
+  check-and-merge:
+    runs-on: ubuntu-latest
+    if: |
+      github.event.workflow_run.conclusion == 'success'
+    permissions:
+      pull-requests: write
+      contents: write
+    env:
+      PR_URL: ${{github.event.pull_request.html_url}}
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - name: Approve PR
+        run: gh pr review "$PR_URL" --approve
+      ## いきなりマージするのが怖いので、一旦自動承認（↑）だけにする
+      #- name: Enable auto-merge
+      #  run: gh pr merge --merge --auto "$PR_URL"
+
+  failed:
+    runs-on: ubuntu-latest
+    if: |
+      github.event.workflow_run.conclusion == 'failure'
+    steps:
+      - name: failed
+        # 失敗したときにデバッグ用に情報を出力しておく
+        run:  |
+          echo 'Haven't met the conditions to merge yet'
+          echo '${{ toJSON(github.event.workflow_run) }}'
+          exit 1
\ No newline at end of file
diff --git a/.github/workflows/e2e-tests.yml b/.github/workflows/e2e-tests.yml
index 34c9b3dce1..dac9fd444e 100644
--- a/.github/workflows/e2e-tests.yml
+++ b/.github/workflows/e2e-tests.yml
@@ -1,21 +1,17 @@
 name: E2E testing for EC-CUBE
+run-name: E2E testing for EC-CUBE
+
 on:
-  push:
-    branches:
-      - '*'
-    tags:
-      - '*'
-    paths:
-      - '**'
-      - '!*.md'
-  pull_request:
-    paths:
-      - '**'
-      - '!*.md'
+  workflow_run:
+    workflows: [CI/CD for EC-CUBE]
+    types: [completed]
+
 jobs:
   run-on-linux:
     name: Run on Linux
     runs-on: ubuntu-22.04
+    if: |
+      github.event.workflow_run.conclusion == 'success'
     strategy:
       fail-fast: false
       matrix:
@@ -85,6 +81,8 @@ jobs:
   installer:
     name: Installer test
     runs-on: ubuntu-22.04
+    if: |
+      github.event.workflow_run.conclusion == 'success'
     strategy:
       fail-fast: false
       matrix:
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 0d33224d88..cc4ef800e7 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,21 +1,17 @@
 name: CI/CD for EC-CUBE
+run-name: CI/CD for EC-CUBE
+
 on:
-  push:
-    branches:
-      - '*'
-    tags:
-      - '*'
-    paths:
-      - '**'
-      - '!*.md'
-  pull_request:
-    paths:
-      - '**'
-      - '!*.md'
+  workflow_run:
+    workflows: [PHPStan]
+    types: [completed]
+
 jobs:
   run-on-linux:
     name: Run on Linux
     runs-on: ${{ matrix.operating-system }}
+    if: |
+      github.event.workflow_run.conclusion == 'success'
     strategy:
       fail-fast: false
       matrix:
@@ -150,6 +146,8 @@ jobs:
   run-on-windows:
     name: Run on Windows
     runs-on: ${{ matrix.operating-system }}
+    if: |
+      github.event.workflow_run.conclusion == 'success'
     strategy:
       fail-fast: false
       matrix:
diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
index 1564e9aa39..19950eb471 100644
--- a/.github/workflows/phpstan.yml
+++ b/.github/workflows/phpstan.yml
@@ -1,4 +1,6 @@
 name: PHPStan
+run-name: PHPStan
+
 on:
   push:
     branches:
@@ -12,6 +14,8 @@ on:
     paths:
       - '**'
       - '!*.md'
+  pull_request_review:
+    types: [submitted]
 
 jobs:
   phpstan: