diff --git a/pkgs/development/libraries/haskell/tostring/default.nix b/pkgs/development/libraries/haskell/tostring/default.nix
index eee617ffd2b..0c181e2b076 100644
--- a/pkgs/development/libraries/haskell/tostring/default.nix
+++ b/pkgs/development/libraries/haskell/tostring/default.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "tostring";
-  version = "0.2.0.1";
-  sha256 = "1gihls2xslr9fzad2659zv8af9k4cm84888nhx3z9bwasviyg448";
+  version = "0.2.0.2";
+  sha256 = "0gjc1576cb4cil55l2jki3y4zp8z6b1m04rf68f2fbc619wji5k6";
   buildDepends = [ text utf8String ];
   meta = {
     description = "The ToString class";