diff --git a/pkgs/development/libraries/haskell/reflection/default.nix b/pkgs/development/libraries/haskell/reflection/default.nix
index 9d3acb72d6b9..d18f711cab32 100644
--- a/pkgs/development/libraries/haskell/reflection/default.nix
+++ b/pkgs/development/libraries/haskell/reflection/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "reflection";
-  version = "1.1.7";
-  sha256 = "073v9y09fvh7nsfqp1jp2ncrq0xkcv5fvikl769ghv2ycgkfxl4z";
+  version = "1.2.0.1";
+  sha256 = "17pzw45yr13nq9y9nb3siypj5amkixy82xm8bpy0nzs1cdfyawx6";
   buildDepends = [ tagged ];
   meta = {
     homepage = "http://github.com/ekmett/reflection";