diff --git a/Casks/postbox.rb b/Casks/postbox.rb
index 258059ac0ae..d5b6e0b973e 100644
--- a/Casks/postbox.rb
+++ b/Casks/postbox.rb
@@ -1,6 +1,6 @@
 cask 'postbox' do
-  version '6.1.5'
-  sha256 '96c68129a9f95dee1c0e7627aa166a8697c1f15088142c32cf10b43298541c87'
+  version '6.1.6'
+  sha256 '896ef7e6a869a4d3dcbf936356481fefa6fc3cc314eadead7485c1724952f9dc'
 
   # d3nx85trn0lqsg.cloudfront.net/mac was verified as official when first introduced to the cask
   url "https://d3nx85trn0lqsg.cloudfront.net/mac/postbox-#{version}-mac64.dmg"