diff --git a/Casks/firefox-beta-ru.rb b/Casks/firefox-beta-ru.rb
index a1ddd659e..1f386db46 100644
--- a/Casks/firefox-beta-ru.rb
+++ b/Casks/firefox-beta-ru.rb
@@ -1,6 +1,6 @@
 cask 'firefox-beta-ru' do
-  version '47.0b4'
-  sha256 'ebf6599a4855b8b83e2f07dedad5288b485e2c1af6550c81a693f4ca7de8166e'
+  version '47.0b5'
+  sha256 '5407714edd73e61f670858d628d0c7860efcf7ac17b6fc554cf6ed1650b81986'
 
   url "https://download.mozilla.org/?product=firefox-#{version}-SSL&os=osx&lang=ru"
   name 'Mozilla Firefox'