1 files changed, 10 insertions, 1 deletions
diff --git a/Library/Homebrew/extend/pathname.rb b/Library/Homebrew/extend/pathname.rb
index ee8d8c9f4..1cbe50f86 100644
--- a/Library/Homebrew/extend/pathname.rb
+++ b/Library/Homebrew/extend/pathname.rb
@@ -197,7 +197,16 @@ class Pathname
 
   def version
     require 'version'
-    Version.parse(self)
+    if BOTTLE_EXTNAME_RX === to_s
+      begin
+        receipt = Utils.popen_read("tar", "-tzf", to_s, "*/*/INSTALL_RECEIPT.json").chomp
+        Version.new(receipt.split("/", 3)[1])
+      rescue
+        Version.parse(self)
+      end
+    else
+      Version.parse(self)
+    end
   end
 
   def compression_type