diff --git a/Casks/firefox-uk.rb b/Casks/firefox-uk.rb
index cd13c9d25..4c4a8bb09 100644
--- a/Casks/firefox-uk.rb
+++ b/Casks/firefox-uk.rb
@@ -1,8 +1,8 @@
 cask :v1 => 'firefox-uk' do
-  version :latest
-  sha256 :no_check
+  version '40.0.3'
+  sha256 'a589e2a71f9db4c58af35341fcd97b79264a228910649bd4b4c9a81d0614dd48'
 
-  url 'https://download.mozilla.org/?product=firefox-latest&os=osx&lang=uk'
+  url "https://download.mozilla.org/?product=firefox-#{version}-SSL&os=osx&lang=uk"
   name 'Firefox'
   homepage 'https://www.mozilla.org/uk/firefox/new'
   license :mpl