diff --git a/pkgs/development/compilers/solc/default.nix b/pkgs/development/compilers/solc/default.nix
index 463481a1547..40d7ef06432 100644
--- a/pkgs/development/compilers/solc/default.nix
+++ b/pkgs/development/compilers/solc/default.nix
@@ -1,16 +1,20 @@
 { stdenv, fetchFromGitHub, boost, cmake, jsoncpp }:
 
 stdenv.mkDerivation rec {
-  version = "0.3.6";
+  version = "0.4.2";
   name = "solc-${version}";
 
   src = fetchFromGitHub {
     owner = "ethereum";
     repo = "solidity";
     rev = "v${version}";
-    sha256 = "1cynqwy8wr63l3l4wv9z6shhcy6lq0q8pbsh3nav0dg9qgj9sg57";
+    sha256 = "1d5x3psz8a9z9jnm30aspfvrpd9kblr14cn5vyl21p27x2vdlzr4";
   };
 
+  patchPhase = ''
+    echo >commit_hash.txt af6afb0415761b53721f89c7f65064807f41cbd3
+  '';
+
   buildInputs = [ boost cmake jsoncpp ];
 
   meta = {