diff --git a/Casks/imagealpha.rb b/Casks/imagealpha.rb
index 57db84c4ca7..b55faf4e944 100644
--- a/Casks/imagealpha.rb
+++ b/Casks/imagealpha.rb
@@ -1,7 +1,7 @@
 class Imagealpha < Cask
-  url 'http://pngmini.com/ImageAlpha1.3.0.6.tar.bz2'
+  url 'http://pngmini.com/ImageAlpha1.3.1.tar.bz2'
   homepage 'http://pngmini.com/'
-  version '1.3.0.6'
-  sha1 '1cb44cd72245e112f146ace5d8685d727f777bdc'
+  version '1.3.1'
+  sha1 '61462ed89ad2048fe7b6fe1fc209baec01751401'
   link 'ImageAlpha.app'
 end