diff --git a/Statistics/LinearRegression.hs b/Statistics/LinearRegression.hs
--- a/Statistics/LinearRegression.hs
+++ b/Statistics/LinearRegression.hs
@@ -1,6 +1,6 @@
 {-# LANGUAGE BangPatterns #-}
 
-module Statistics.LinearRegression (linearRegression, correl, covar) where
+module Statistics.LinearRegression (linearRegressionRSqr, linearRegression, correl, covar) where
 
 import qualified Data.Vector.Unboxed as U
 import qualified Statistics.Sample as S
diff --git a/statistics-linreg.cabal b/statistics-linreg.cabal
--- a/statistics-linreg.cabal
+++ b/statistics-linreg.cabal
@@ -7,16 +7,20 @@
 -- The package version. See the Haskell package versioning policy
 -- (http://www.haskell.org/haskellwiki/Package_versioning_policy) for
 -- standards guiding when and how versions should be incremented.
-Version:             0.2
+Version:             0.2.1
 
 -- A short (one-line) description of the package.
 Synopsis:            Linear regression between two samples, based on the 'statistics' package
 
 -- A longer description of the package.
 Description:         Provides a function to perform a linear regression between 2 samples, see the documentation of the linearRegression function. This library is based on the 'statistics' package.
+		     .
+		     0.2.*: added the r-squared version and improved the performances
 
 -- URL for the project homepage or repository.
 Homepage:            http://github.com/alpmestan/statistics-linreg
+Bug-reports:         https://github.com/alpmestan/statistics-linreg/issues
+
 -- The license under which the package is released.
 License:             MIT
 
@@ -45,7 +49,7 @@
 -- Extra-source-files:  
 
 -- Constraint on the version of Cabal needed to build this package.
-Cabal-version:       >=1.4
+Cabal-version:       >=1.6
 
 
 Library
@@ -62,3 +66,6 @@
   -- Extra tools (e.g. alex, hsc2hs, ...) needed to build the source.
   -- Build-tools:         
   
+source-repository head
+  type: git
+  location: http://github.com/alpmestan/statistics-linreg.git