diff --git a/.github/pr-title-checker-config.json b/.github/pr-title-checker-config.json
index 0d6efe7..2d5d137 100644
--- a/.github/pr-title-checker-config.json
+++ b/.github/pr-title-checker-config.json
@@ -4,7 +4,7 @@
     "color": "B60205"
   },
   "CHECKS": {
-    "regexp": "^(feat|fix|test|refactor|chore|style|docs|perf|build|ci|revert)(!)?(\\(.*\\))?:.*",
+    "regexp": "^(feat|fix|test|refactor|chore|style|docs|perf|build|ci|revert|enhancement)(!)?(\\(.*\\))?:.*",
     "ignoreLabels" : ["ignore-title"]
   }
 }
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 413f4c9..f28691e 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -5,6 +5,7 @@ on: [push, pull_request]
 jobs:
   chart-test:
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'GreptimeTeam/helm-charts' }}
     steps:
       - name: Checkout sources
         uses: actions/checkout@v3
diff --git a/.github/workflows/e2e.yaml b/.github/workflows/e2e.yaml
index c8573bd..3f1868a 100644
--- a/.github/workflows/e2e.yaml
+++ b/.github/workflows/e2e.yaml
@@ -14,6 +14,7 @@ on:
 jobs:
   e2e:
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'GreptimeTeam/helm-charts' }}
     steps:
       - name: Checkout code
         uses: actions/checkout@v3
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 899ab33..f04a8b2 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -16,6 +16,7 @@ jobs:
     permissions:
       contents: write
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'GreptimeTeam/helm-charts' }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -45,7 +46,7 @@ jobs:
 
   release-charts-to-acr:
     runs-on: ubuntu-latest
-    if: ${{ inputs.release-charts-to-acr == 'true' || github.event_name == 'push' }}
+    if: ${{ github.repository == 'GreptimeTeam/helm-charts' && (inputs.release-charts-to-acr == 'true' || github.event_name == 'push') }}
     steps:
       - name: Check out code
         uses: actions/checkout@v4