diff --git a/Casks/m/millie.rb b/Casks/m/millie.rb
index 2a59bf9d98..416dbddd75 100644
--- a/Casks/m/millie.rb
+++ b/Casks/m/millie.rb
@@ -1,6 +1,6 @@
 cask "millie" do
-  version "5.16.0"
-  sha256 "ee0f106faa876cd2ce57698deb71f27901dc49a04b1653aba1231dc10ed4590d"
+  version "5.17.1"
+  sha256 "03fa2c51684a1a870226742267de24dd2bb8fc4d4fcb1f03df34554fdeaac08f"
 
   url "https://apis.millie.co.kr/v1/download/installer/mac/Millie-#{version}.dmg"
   name "millie"