diff --git a/.github/workflows/compiler-build.yml b/.github/workflows/compiler-build.yml
index 038585ffdb..20f819393d 100644
--- a/.github/workflows/compiler-build.yml
+++ b/.github/workflows/compiler-build.yml
@@ -1,6 +1,11 @@
 name: compiler-build
 
 on: [push, pull_request]
+
+concurrency:
+  group: ${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   NUGET_CERT_REVOCATION_MODE: offline
   NUGET_PACKAGES: ${{ github.workspace }}/.nuget/packages
diff --git a/.github/workflows/compiler-python-release.yml b/.github/workflows/compiler-python-release.yml
index e201cb8a48..65b9d8d450 100644
--- a/.github/workflows/compiler-python-release.yml
+++ b/.github/workflows/compiler-python-release.yml
@@ -2,6 +2,10 @@ name: compiler-python-release
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build-compiler:
     name: build-${{matrix.config.name}}
diff --git a/.github/workflows/runtime-build.yml b/.github/workflows/runtime-build.yml
index 3330b05156..1b48c6fa77 100644
--- a/.github/workflows/runtime-build.yml
+++ b/.github/workflows/runtime-build.yml
@@ -2,6 +2,10 @@ name: runtime-build
 
 on: [push, pull_request]
 
+concurrency:
+  group: ${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build-native-runtime:
     name: build-runtime-${{matrix.config.name}}
diff --git a/.gitignore b/.gitignore
index b518626f74..e8d3ff9274 100644
--- a/.gitignore
+++ b/.gitignore
@@ -301,6 +301,6 @@ nupkg
 *.runsettings
 cmake-build-*
 *gmodel_dump_dir*
-
+*.ipynb_checkpoints*
 # Auto generated files
 # generated/
\ No newline at end of file