diff --git a/Casks/s/simplex.rb b/Casks/s/simplex.rb
index 8d126bc370..db2aa4401d 100644
--- a/Casks/s/simplex.rb
+++ b/Casks/s/simplex.rb
@@ -1,9 +1,9 @@
 cask "simplex" do
   arch arm: "aarch64", intel: "x86_64"
 
-  version "5.4.2"
-  sha256 arm:   "52f857387808834e4dbc8d16ef911072d1e6a829a285fdd3e5567e86e7b536d0",
-         intel: "b43675b36be05ce638d6366d7341b4ef3aa2213468a57eadfc74d50742065510"
+  version "5.4.3"
+  sha256 arm:   "4bfc2a75b7d94dac6f2d0a159960d3fdbfca7ff0e4f49e0dc595bdb526d60407",
+         intel: "7e615ec4b0fca25266d5e4c578449bf03bfa0ad9739a550dc0d408122571b584"
 
   url "https://github.com/simplex-chat/simplex-chat/releases/download/v#{version}/simplex-desktop-macos-#{arch}.dmg",
       verified: "github.com/simplex-chat/simplex-chat/"