diff --git a/.github/workflows/check_milvus_proto.yml b/.github/workflows/check_milvus_proto.yml
index b12887b51..2c6239f50 100644
--- a/.github/workflows/check_milvus_proto.yml
+++ b/.github/workflows/check_milvus_proto.yml
@@ -4,7 +4,6 @@ on:
   pull_request:
     branches:
       - master
-      - 2.5
 
 jobs:
   build:
diff --git a/.github/workflows/code_checker.yml b/.github/workflows/code_checker.yml
index 2578d0459..8a15b70d4 100644
--- a/.github/workflows/code_checker.yml
+++ b/.github/workflows/code_checker.yml
@@ -4,7 +4,6 @@ on:
   pull_request:
     branches:
       - master
-      - 2.5
 
 jobs:
   code-lint:
diff --git a/.github/workflows/publish_dev_package.yml b/.github/workflows/publish_dev_package.yml
index 407607484..674eae7d2 100644
--- a/.github/workflows/publish_dev_package.yml
+++ b/.github/workflows/publish_dev_package.yml
@@ -3,8 +3,7 @@ name: Publish Python 🐍 distributions 📦 to TestPyPI
 on:
   push:
     branches:
-      - 'master'
-      - '2.5'
+      - master
 
 jobs:
   build-n-publish:
diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index adbc54353..73cc36cb3 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -4,7 +4,6 @@ on:
   pull_request:
     branches:
       - master
-      - 2.5
 
 jobs:
   build: