diff --git a/CHANGELOG.md b/CHANGELOG.md
index 25185c6..d42da1b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 Changelog
 =========
+# v3.0.9 (Jan 26, 2018)
+* Fixed signing assembly issue on Windows build.
+
 # v3.0.8 (Jan 24, 2018)
 * Reconnect() method added for explicit reconnection.
 * Application ID re-initialization added.
diff --git a/README.md b/README.md
index 2ae57d4..fda3786 100644
--- a/README.md
+++ b/README.md
@@ -15,3 +15,6 @@ Place `SendBird.Unity.dll` & `websocket-sharp.dll` into your project.
 
 ### .NET/Xamarin
 Place `SendBird.dll` & `websocket-sharp.dll` into your project.
+
+
+** `SendBird.dll` and `SendBird.Unity.dll` reference specific version of `websocket-sharp.dll`. Please update both `websocket-sharp.dll` and `SendBird.*.dll` together. **
diff --git a/SendBird.Unity.dll b/SendBird.Unity.dll
index d4d94ef..284953a 100755
Binary files a/SendBird.Unity.dll and b/SendBird.Unity.dll differ
diff --git a/SendBird.dll b/SendBird.dll
index b00f9bc..4ef59e3 100755
Binary files a/SendBird.dll and b/SendBird.dll differ
diff --git a/websocket-sharp.dll b/websocket-sharp.dll
index 604803e..b5ff296 100644
Binary files a/websocket-sharp.dll and b/websocket-sharp.dll differ