diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 2e76819..50a602c 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -2,9 +2,9 @@ name: CI/CD Pipeline - Northern Thailand Ping River Monitor
 
 on:
   push:
-    branches: [ main, develop ]
+    branches: [ master, develop ]
   pull_request:
-    branches: [ main ]
+    branches: [ master ]
   schedule:
     # Run tests daily at 2 AM UTC
     - cron: '0 2 * * *'
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.11', '3.12']
     
     steps:
     - name: Checkout code
@@ -271,7 +271,7 @@ jobs:
     name: Deploy to Production
     runs-on: ubuntu-latest
     needs: [test, build, integration-test]
-    if: github.ref == 'refs/heads/main'
+    if: github.ref == 'refs/heads/master'
     environment:
       name: production
       url: https://ping-river-monitor.b4l.co.th
@@ -303,7 +303,7 @@ jobs:
     name: Performance Test
     runs-on: ubuntu-latest
     needs: deploy-production
-    if: github.ref == 'refs/heads/main'
+    if: github.ref == 'refs/heads/master'
     
     steps:
     - name: Checkout code
diff --git a/.gitea/workflows/docs.yml b/.gitea/workflows/docs.yml
index c44360e..6cc1717 100644
--- a/.gitea/workflows/docs.yml
+++ b/.gitea/workflows/docs.yml
@@ -2,7 +2,7 @@ name: Documentation
 
 on:
   push:
-    branches: [ main, develop ]
+    branches: [ master, develop ]
     paths:
       - 'docs/**'
       - 'README.md'