diff --git a/HQu.cabal b/HQu.cabal
--- a/HQu.cabal
+++ b/HQu.cabal
@@ -1,6 +1,6 @@
 cabal-version:       2.4
 name:                HQu
-version:             0.0.0.3
+version:             0.0.0.4
 synopsis:            quantitative finance library
 description:         General purpose quantitative finance library
 homepage:            https://github.com/ghais/HQu
@@ -23,7 +23,7 @@
   location:            https://github.com/ghais/HQu.git
 
 common common-options
-  build-depends:       base >= 4.11.1.0 && < 5
+  build-depends:       base >= 4.11.0 && < 5
   
   
   ghc-options:         -Wall
@@ -113,7 +113,7 @@
                        normaldistribution.h
                        rationalcubic.h
   build-depends:
-                       bytestring >=0.10 && <0.11
+                       bytestring >=0.10 && <0.12
                      , cassava >=0.5
                      , containers >= 0.6.2 && <0.7
                      , conversion >= 1.2 && <2
@@ -163,7 +163,7 @@
  if os(linux)
        if arch(x86_64)
             cc-options: -fPIC
-
+ extra-libraries: gsl
  pkgconfig-depends: gsl
 
 test-suite bachelier-test
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # HQu
 
-[![GitHub CI](https://github.com/ghais/HQu/workflows/CI/badge.svg)](https://github.com/ghais/HQu/actions)
-[![Build status](https://img.shields.io/travis/ghais/HQu.svg?logo=travis)](https://travis-ci.org/ghais/HQu)
+[![Haskell CI](https://github.com/ghais/HQu/actions/workflows/haskell.yml/badge.svg)](https://github.com/ghais/HQu/actions/workflows/haskell.yml)
+[![Build Status](https://travis-ci.com/ghais/HQu.svg?branch=main)](https://travis-ci.com/ghais/HQu)
 [![Windows build status](https://ci.appveyor.com/api/projects/status/github/ghais/HQu?branch=master&svg=true)](https://ci.appveyor.com/project/ghais/HQu)
 [![Hackage](https://img.shields.io/hackage/v/HQu.svg?logo=haskell)](https://hackage.haskell.org/package/HQu)
 [![Stackage Lts](http://stackage.org/package/HQu/badge/lts)](http://stackage.org/lts/package/HQu)