diff --git a/.github/workflows/check-changelog.yml b/.github/workflows/check-changelog.yml
index bd01836..c377088 100644
--- a/.github/workflows/check-changelog.yml
+++ b/.github/workflows/check-changelog.yml
@@ -2,6 +2,7 @@ name: Check Changelog
 
 on: 
   pull_request:
+    types: [assigned, opened, synchronize, reopened, labeled, unlabeled]
 
 jobs:
   check-changelog:
diff --git a/README.md b/README.md
index 32707bc..e66359f 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,10 @@
 # Communication
 
+[![NuGet](https://img.shields.io/nuget/v/JSSoft.Communication.svg?style=flat)][NuGet]
+[![NuGet (prerelease)](https://img.shields.io/nuget/vpre/JSSoft.Communication.svg?style=flat)][NuGet]
+
+[NuGet]: https://www.nuget.org/packages/JSSoft.Communication/
+
 ## Summary
 
 The Communication library is network module using <https://github.com/grpc/grpc>.