diff --git a/Casks/protonmail-bridge.rb b/Casks/protonmail-bridge.rb
index 3b3602847d..f97d401e95 100644
--- a/Casks/protonmail-bridge.rb
+++ b/Casks/protonmail-bridge.rb
@@ -1,5 +1,5 @@
 cask "protonmail-bridge" do
-  version "1.6.3"
+  version "1.6.6"
   sha256 :no_check
 
   url "https://protonmail.com/download/Bridge-Installer.dmg"