diff --git a/Casks/k/kindle-previewer.rb b/Casks/k/kindle-previewer.rb
index 7c7c7548fa..dae42fdc50 100644
--- a/Casks/k/kindle-previewer.rb
+++ b/Casks/k/kindle-previewer.rb
@@ -1,5 +1,5 @@
 cask "kindle-previewer" do
-  version "3.77.1"
+  version "3.78.0"
   sha256 :no_check
 
   url "https://d2bzeorukaqrvt.cloudfront.net/KindlePreviewerInstaller.pkg",