diff --git a/pkgs/development/compilers/yap/default.nix b/pkgs/development/compilers/yap/default.nix
index dea7d3cd6e8..5bab88e9c41 100644
--- a/pkgs/development/compilers/yap/default.nix
+++ b/pkgs/development/compilers/yap/default.nix
@@ -1,12 +1,12 @@
 { stdenv, fetchurl, readline, gmp, zlib }:
 
 stdenv.mkDerivation rec {
-  version = "6.2.2";
+  version = "6.3.3";
   name = "yap-${version}";
 
   src = fetchurl {
     url = "http://www.dcc.fc.up.pt/~vsc/Yap/${name}.tar.gz";
-    sha256 = "0l6p0vy667wws64cvwf74ssl6h9gypjzrsl3b2d32hs422186pzi";
+    sha256 = "0y7sjwimadqsvgx9daz28c9mxcx9n1znxklih9xg16k6n54v9qxf";
   };
 
   buildInputs = [ readline gmp zlib ];