diff --git a/entropy.cabal b/entropy.cabal
--- a/entropy.cabal
+++ b/entropy.cabal
@@ -1,5 +1,5 @@
 name:           entropy
-version:        0.4
+version:        0.4.1
 description:    A platform independent method to obtain cryptographically strong entropy
                 (RDRAND, urandom, CryptAPI, and patches welcome)
                 Users looking for cryptographically strong (number-theoretically
@@ -32,7 +32,7 @@
 
 
 custom-setup
-  setup-depends: Cabal >= 1.10 && < 2.2
+  setup-depends: Cabal >= 2.0 && < 2.3
                , base < 5
                , filepath < 1.5
                , directory < 1.4
@@ -51,7 +51,7 @@
   }
   other-extensions:    CPP, ForeignFunctionInterface, BangPatterns,
                        ScopedTypeVariables
-  build-depends:       base >= 4.3 && < 5, bytestring
+  build-depends:       base >= 4.8 && < 5, bytestring
   default-language:    Haskell2010
   if(os(halvm))
     cpp-options: -DXEN -DHAVE_RDRAND