diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9aedf842d..d54787a00 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   
 ### Fixed
 
+- vertical bar showing in WebUI sidebar menu using FireFox
+
 ### Changed
 
 - Heartbeat MQTT payload is now in JSON
diff --git a/src/version.h b/src/version.h
index a4888aa6e..648fa4f00 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define APP_VERSION "1.9.3b3"
+#define APP_VERSION "1.9.3b4"