diff --git a/Changelog.md b/Changelog.md
index add401fe..8c7a76dd 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -3,6 +3,12 @@
 Changelog [format](http://keepachangelog.com/en/1.0.0/)
 
 
+## Ypsilon Bridge 3.9.1
+
+### Fixed
+* GODT-3235: Update bridge update key.
+
+
 ## Ypsilon Bridge 3.9.0
 
 ### Added
diff --git a/Makefile b/Makefile
index 1074e832..8add54b1 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,7 @@ ROOT_DIR:=$(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))
 .PHONY: build build-gui build-nogui build-launcher versioner hasher
 
 # Keep version hardcoded so app build works also without Git repository.
-BRIDGE_APP_VERSION?=3.9.0+git
+BRIDGE_APP_VERSION?=3.9.1+git
 APP_VERSION:=${BRIDGE_APP_VERSION}
 APP_FULL_NAME:=Proton Mail Bridge
 APP_VENDOR:=Proton AG