diff --git a/CI/osx/obs-websocket.pkgproj b/CI/osx/obs-websocket.pkgproj
index 1e317302..9f780231 100644
--- a/CI/osx/obs-websocket.pkgproj
+++ b/CI/osx/obs-websocket.pkgproj
@@ -635,7 +635,7 @@
 			<key>OVERWRITE_PERMISSIONS</key>
 			<false/>
 			<key>VERSION</key>
-			<string>4.0.0</string>
+			<string>4.2.1</string>
 		</dict>
 		<key>PROJECT_COMMENTS</key>
 		<dict>
diff --git a/docs/partials/introduction.md b/docs/partials/introduction.md
index 4bb99073..b6005c96 100644
--- a/docs/partials/introduction.md
+++ b/docs/partials/introduction.md
@@ -1,6 +1,7 @@
-# obs-websocket 4.2.0 protocol reference
+# obs-websocket 4.2.1 protocol reference
 
-**This is the reference for obs-websocket 4.2.0. See the list below for older versions.**
+**This is the reference for the unreleased obs-websocket 4.2.1. See the list below for older versions.**
+- [4.2.0 protocol reference](https://github.com/Palakis/obs-websocket/blob/4.2.0/PROTOCOL.md)
 - [4.1.0 protocol reference](https://github.com/Palakis/obs-websocket/blob/4.1.0/PROTOCOL.md)
 - [4.0.0 protocol reference](https://github.com/Palakis/obs-websocket/blob/4.0.0/PROTOCOL.md)
 
diff --git a/installer/installer.iss b/installer/installer.iss
index 859a404e..a1b46b84 100644
--- a/installer/installer.iss
+++ b/installer/installer.iss
@@ -2,7 +2,7 @@
 ; SEE THE DOCUMENTATION FOR DETAILS ON CREATING INNO SETUP SCRIPT FILES!
 
 #define MyAppName "obs-websocket"
-#define MyAppVersion "4.2.0"
+#define MyAppVersion "4.2.1"
 #define MyAppPublisher "Stéphane Lepin"
 #define MyAppURL "http://github.com/Palakis/obs-websocket"
 
diff --git a/obs-websocket.h b/obs-websocket.h
index 16cfde53..88f4f2cf 100644
--- a/obs-websocket.h
+++ b/obs-websocket.h
@@ -20,7 +20,7 @@ with this program. If not, see <https://www.gnu.org/licenses/>
 #define OBSWEBSOCKET_H
 
 #define PROP_AUTHENTICATED "wsclient_authenticated"
-#define OBS_WEBSOCKET_VERSION "4.2.0"
+#define OBS_WEBSOCKET_VERSION "4.2.1"
 
 #define blog(level, msg, ...) blog(level, "[obs-websocket] " msg, ##__VA_ARGS__)