diff --git a/Library/Homebrew/version.rb b/Library/Homebrew/version.rb
index f5fdb096695c9..0f3cbb7737aee 100644
--- a/Library/Homebrew/version.rb
+++ b/Library/Homebrew/version.rb
@@ -260,6 +260,10 @@ def hash
     version.hash
   end
 
+  def to_f
+    version.to_f
+  end
+
   def to_s
     version.dup
   end