diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 668a5ae..5738b50 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -2,9 +2,9 @@ name: Basic CI
 
 on:
   push:
-    branches: [ "main" ]
   pull_request:
-    branches: [ "main" ]
+  merge_group:
+  workflow_dispatch:
 
 jobs:
   setup:
diff --git a/.github/workflows/sdk-testing.yml b/.github/workflows/sdk-testing.yml
index b4f9bcf..63d9752 100644
--- a/.github/workflows/sdk-testing.yml
+++ b/.github/workflows/sdk-testing.yml
@@ -1,9 +1,10 @@
 name: SDK Test Automation
 
 on:
+  push:
   pull_request:
-    branches:
-      - main
+  merge_group:
+  workflow_dispatch:
 
 jobs:
   test-java:
@@ -20,14 +21,9 @@ jobs:
           submodules: recursive
 
       - name: Update line-openapi submodule
-        run: |
-          cd line-openapi
-          git remote add pr-source $PR_REPO_URL
-          git fetch pr-source $PR_REF
-          git checkout FETCH_HEAD
-        env:
-          PR_REPO_URL: ${{ github.event.pull_request.head.repo.clone_url }}
-          PR_REF: ${{ github.event.pull_request.head.ref }}
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          path: './line-openapi'
 
       # https://github.com/line/line-bot-sdk-java/blob/master/.github/workflows/gradle.yml
       - name: Setup Java
@@ -45,6 +41,7 @@ jobs:
           git diff --color=always --staged
 
       - name: Post PR comment
+        if : ${{ github.event_name == 'pull_request' }}
         uses: ./line-openapi/.github/actions/post-comment-action
         with:
           language: java
@@ -67,14 +64,9 @@ jobs:
           submodules: recursive
 
       - name: Update line-openapi submodule
-        run: |
-          cd line-openapi
-          git remote add pr-source $PR_REPO_URL
-          git fetch pr-source $PR_REF
-          git checkout FETCH_HEAD
-        env:
-          PR_REPO_URL: ${{ github.event.pull_request.head.repo.clone_url }}
-          PR_REF: ${{ github.event.pull_request.head.ref }}
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          path: './line-openapi'
 
       # https://github.com/line/line-bot-sdk-python/blob/master/.github/workflows/auto-testing.yml
       - name: Setup Python
@@ -96,6 +88,7 @@ jobs:
           git diff --color=always --staged
 
       - name: Post PR comment
+        if : ${{ github.event_name == 'pull_request' }}
         uses: ./line-openapi/.github/actions/post-comment-action
         with:
           language: python
@@ -118,14 +111,9 @@ jobs:
           submodules: recursive
 
       - name: Update line-openapi submodule
-        run: |
-          cd line-openapi
-          git remote add pr-source $PR_REPO_URL
-          git fetch pr-source $PR_REF
-          git checkout FETCH_HEAD
-        env:
-          PR_REPO_URL: ${{ github.event.pull_request.head.repo.clone_url }}
-          PR_REF: ${{ github.event.pull_request.head.ref }}
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          path: './line-openapi'
 
       # https://github.com/line/line-bot-sdk-php/blob/master/.github/workflows/php-checks.yml
       - name: Setup PHP
@@ -176,6 +164,7 @@ jobs:
           git diff --color=always --staged
 
       - name: Post PR comment
+        if : ${{ github.event_name == 'pull_request' }}
         uses: ./line-openapi/.github/actions/post-comment-action
         with:
           language: php
@@ -198,14 +187,9 @@ jobs:
           submodules: recursive
 
       - name: Update line-openapi submodule
-        run: |
-          cd line-openapi
-          git remote add pr-source $PR_REPO_URL
-          git fetch pr-source $PR_REF
-          git checkout FETCH_HEAD
-        env:
-          PR_REPO_URL: ${{ github.event.pull_request.head.repo.clone_url }}
-          PR_REF: ${{ github.event.pull_request.head.ref }}
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          path: './line-openapi'
 
       # https://github.com/line/line-bot-sdk-nodejs/blob/master/.github/workflows/test.yml
       - name: Setup Java
@@ -232,6 +216,7 @@ jobs:
           git diff --color=always --staged
 
       - name: Post PR comment
+        if : ${{ github.event_name == 'pull_request' }}
         uses: ./line-openapi/.github/actions/post-comment-action
         with:
           language: nodejs
@@ -254,14 +239,9 @@ jobs:
           submodules: recursive
 
       - name: Update line-openapi submodule
-        run: |
-          cd line-openapi
-          git remote add pr-source $PR_REPO_URL
-          git fetch pr-source $PR_REF
-          git checkout FETCH_HEAD
-        env:
-          PR_REPO_URL: ${{ github.event.pull_request.head.repo.clone_url }}
-          PR_REF: ${{ github.event.pull_request.head.ref }}
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          path: './line-openapi'
 
       # https://github.com/line/line-bot-sdk-go/blob/master/.github/workflows/go.yml
       - name: Setup Java
@@ -293,6 +273,7 @@ jobs:
           git diff --color=always --staged
 
       - name: Post PR comment
+        if : ${{ github.event_name == 'pull_request' }}
         uses: ./line-openapi/.github/actions/post-comment-action
         with:
           language: go