diff --git a/pkgs/development/libraries/mpfr/default.nix b/pkgs/development/libraries/mpfr/default.nix
index c083238cca0..5063caf9094 100644
--- a/pkgs/development/libraries/mpfr/default.nix
+++ b/pkgs/development/libraries/mpfr/default.nix
@@ -2,10 +2,9 @@ args: with args;
 stdenv.mkDerivation {
   name = "mpfr-2.3.0";
 
-  src =
-	fetchurl {
-		url = http://www.mpfr.org/mpfr-current/mpfr-2.3.0.tar.bz2;
-		sha256 = "0j1dgpqhw21xc0clm7785jm6k04v9zsssdydvm2z3lcj9ws0v7rm";
+  src = fetchurl {
+	  url = http://www.mpfr.org/mpfr-current/mpfr-2.3.1.tar.bz2;
+	  sha256 = "0c44va4plxfd9zm7aa24173im38svnb15lbxql5hvxbc9bgzjmyq";
 	};
 
   buildInputs =[gmp];