diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index a485acb7..8e68f393 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,6 +1,10 @@
 # Changelog
 All changes to this project will be documented in this file.
 
+## [9.6.4] - 2020-05-20
+
+(compiler fix) support clang 5 and earlier (contributed by @LunarWatcher)
+
 ## [9.6.3] - 2020-05-18
 
 (cmake) revert CMake changes to fix #203 and be able to use an external OpenSSL
diff --git a/ixwebsocket/IXWebSocketVersion.h b/ixwebsocket/IXWebSocketVersion.h
index c1f4c4a5..b62686b2 100644
--- a/ixwebsocket/IXWebSocketVersion.h
+++ b/ixwebsocket/IXWebSocketVersion.h
@@ -6,4 +6,4 @@
 
 #pragma once
 
-#define IX_WEBSOCKET_VERSION "9.6.3"
+#define IX_WEBSOCKET_VERSION "9.6.4"