diff --git a/Casks/b/buttercup.rb b/Casks/b/buttercup.rb
index 3c658841cf..c5fdb3e833 100644
--- a/Casks/b/buttercup.rb
+++ b/Casks/b/buttercup.rb
@@ -1,6 +1,6 @@
 cask "buttercup" do
-  version "2.20.3"
-  sha256 "281becfa2405b0c533c364b0572f497a95d0986fd3a3e18f778ea1e8c5a6d24d"
+  version "2.21.0"
+  sha256 "35456afa1afb9df9273a120dc24cadbe2ff53a2613e5984b3cbc9a0a7c99c101"
 
   url "https://github.com/buttercup/buttercup-desktop/releases/download/v#{version}/Buttercup-mac-x64-#{version}.dmg",
       verified: "github.com/buttercup/buttercup-desktop/"