diff --git a/.github/workflows/check-version.yml b/.github/workflows/check-version.yml
deleted file mode 100644
index 16b0475f..00000000
--- a/.github/workflows/check-version.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-on: push
-
-name: Check package version
-
-jobs:
-  checkVersion:
-    name: Check package version
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Check package version
-        uses: technote-space/package-version-check-action@v1
-        with:
-          GITHUB_TOKEN: ${{ secrets.ACCESS_TOKEN }}
-          TEST_TAG_PREFIX: test/
-          BRANCH_PREFIX: release/
diff --git a/.github/workflows/pr-opened.yml b/.github/workflows/pr-opened.yml
index 6d0c6e24..2f4e59c8 100644
--- a/.github/workflows/pr-opened.yml
+++ b/.github/workflows/pr-opened.yml
@@ -33,3 +33,24 @@ jobs:
         uses: technote-space/pr-labeler-action@v3
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  checkVersion:
+    name: Check package version
+    runs-on: ubuntu-latest
+    if: startsWith(github.event.pull_request.head.ref, 'release/')
+    steps:
+      - name: Set running flag
+        run: echo "::set-env name=RUNNING::1"
+      - uses: actions/checkout@v2
+      - name: Set running flag
+        run: |
+          if [[ ! -f package.json ]] || [[ $(< package.json jq -r '.version == null') == 'true' ]]; then
+            echo "::set-env name=RUNNING::"
+          fi
+
+      - name: Check package version
+        uses: technote-space/package-version-check-action@v1
+        with:
+          GITHUB_TOKEN: ${{ secrets.ACCESS_TOKEN }}
+          BRANCH_PREFIX: release/
+        if: env.RUNNING
diff --git a/.github/workflows/pr-updated.yml b/.github/workflows/pr-updated.yml
index 98b9d810..f5a175af 100644
--- a/.github/workflows/pr-updated.yml
+++ b/.github/workflows/pr-updated.yml
@@ -1,4 +1,6 @@
-on: pull_request
+on:
+  pull_request:
+    types: [opened, synchronize]
 
 name: Pull Request updated
 
@@ -16,6 +18,7 @@ jobs:
   assignToProject:
     name: Assign PullRequest to Project
     runs-on: ubuntu-latest
+    if: github.event.action == 'synchronize'
     steps:
       - uses: actions/checkout@v2
       - uses: technote-space/get-git-comment-action@v1
@@ -31,6 +34,7 @@ jobs:
   assignAuthor:
     name: Assign author to PR
     runs-on: ubuntu-latest
+    if: github.event.action == 'synchronize'
     steps:
       - uses: actions/checkout@v2
       - uses: technote-space/get-git-comment-action@v1
@@ -44,6 +48,7 @@ jobs:
   addLabelsByBranch:
     name: PR Labeler
     runs-on: ubuntu-latest
+    if: github.event.action == 'synchronize'
     steps:
       - uses: actions/checkout@v2
       - uses: technote-space/get-git-comment-action@v1
@@ -53,3 +58,29 @@ jobs:
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           IGNORE_CONTEXT_CHECK: true
+
+  checkVersion:
+    name: Check package version
+    runs-on: ubuntu-latest
+    if: github.event.action == 'synchronize' && startsWith(github.event.pull_request.head.ref, 'release/')
+    steps:
+      - name: Set running flag
+        run: echo "::set-env name=RUNNING::"
+      - uses: actions/checkout@v2
+      - uses: technote-space/get-git-comment-action@v1
+      - name: Set running flag
+        run: echo "::set-env name=RUNNING::1"
+        if: contains(env.COMMIT_MESSAGE, 'trigger workflow')
+      - name: Set running flag
+        run: |
+          if [[ ! -f package.json ]] || [[ $(< package.json jq -r '.version == null') == 'true' ]]; then
+            echo "::set-env name=RUNNING::"
+          fi
+
+      - name: Check package version
+        uses: technote-space/package-version-check-action@v1
+        with:
+          GITHUB_TOKEN: ${{ secrets.ACCESS_TOKEN }}
+          BRANCH_PREFIX: release/
+          IGNORE_CONTEXT_CHECK: true
+        if: env.RUNNING