diff --git a/Casks/rstudio-preview.rb b/Casks/rstudio-preview.rb
index ec98edd74..95bc1482f 100644
--- a/Casks/rstudio-preview.rb
+++ b/Casks/rstudio-preview.rb
@@ -1,6 +1,6 @@
 cask :v1 => 'rstudio-preview' do
-  version '0.98.1079'
-  sha256 'f504400b9cb6d01f7504beedc6ad41b1b10ca8bab8a238eacfe3989cce0b0c9e'
+  version '0.99.174'
+  sha256 '50407f5f2fdcc84dab862d5c32e9264e8280338d625389ce9963e35cf83c7bc4'
 
   url "https://s3.amazonaws.com/rstudio-dailybuilds/RStudio-#{version}.dmg"
   homepage 'http://www.rstudio.com/ide/download/preview'