diff --git a/Casks/grids.rb b/Casks/grids.rb
index 37241192e6c..36de43b1433 100644
--- a/Casks/grids.rb
+++ b/Casks/grids.rb
@@ -1,10 +1,10 @@
 cask 'grids' do
-  version '4.5.7'
-  sha256 'd9de0935d83c8d3b18620e8fd5cd5aeaaab0512f6a29231e2ac04d727daa27b1'
+  version '4.5.9'
+  sha256 '0198696f2110eaab4e97001de5a88d1242572f646b17e2168af567dc88fcd458'
 
   url "http://thegridsapp.com/bin/Grids_#{version}.dmg"
   appcast 'http://thegridsapp.com/appcast.json',
-          checkpoint: 'f3a796bb0271c5f4f8f960dd151faa86c6bdbdda5f5df7c3a41c373db5ec31c7'
+          checkpoint: 'f844ed9e6995c41adf9cff2837b7da464cf2b18162107c572820ffaab8c13f09'
   name 'Grids'
   homepage 'http://thegridsapp.com/'