diff --git a/Casks/m/malwarebytes.rb b/Casks/m/malwarebytes.rb
index d249f57f95..c396bfbf53 100644
--- a/Casks/m/malwarebytes.rb
+++ b/Casks/m/malwarebytes.rb
@@ -1,6 +1,6 @@
 cask "malwarebytes" do
-  version "4.20.7.5022"
-  sha256 "347ca904c0b571768cea20cec490a4d8f8d370a01aa3635abc9e671463f94bb9"
+  version "4.21.9.5141"
+  sha256 "b4f4c4a2b27b5f454feb64129eacb2209a76825f6d7dd828aa97973e63c31955"
 
   url "https://data-cdn.mbamupdates.com/web/mb#{version.major}_mac/Malwarebytes-Mac-#{version}.pkg",
       verified: "data-cdn.mbamupdates.com/web/"