diff --git a/number.cabal b/number.cabal
index 8ac791d..e23b841 100644
--- a/number.cabal
+++ b/number.cabal
@@ -1,17 +1,26 @@
 name:                number
 version:             0.1.0.0
--- synopsis:            
--- description:         
+synopsis:            A datatype for real numbers
+description:
+
+  Data.Number is an attempt to give an almost complete
+  representation and arithmetics to real numbers without
+  precision loss using continued fractions and Gosper’s algorithms.
+
 license:             MIT
 license-file:        LICENSE
 author:              Michele Guerini Rocco
 maintainer:          micheleguerinirocco@me.com
--- copyright:        
+copyright:           (C) Michele Guerini Rocco 2015   
 category:            Math
 build-type:          Simple
--- extra-source-files:  
+extra-source-files:  README.md, LICENSE
 cabal-version:       >=1.10
 
+source-repository head
+  type: git
+  location: https://github.com/rnhmjoj/hsilop
+
 library
   exposed-modules:   Data.Number,
                      Data.Number.Functions,
@@ -22,4 +31,5 @@ library
   other-extensions:    TypeSynonymInstances, FlexibleInstances
   build-depends:       base >=4.8, numericpeano
   hs-source-dirs:      src
-  default-language:    Haskell2010
\ No newline at end of file
+  default-language:    Haskell2010
+  ghc-options:         -O2
\ No newline at end of file