diff --git a/pkgs/development/libraries/haskell/pretty-show/default.nix b/pkgs/development/libraries/haskell/pretty-show/default.nix
index deb9e731ebda..19398be7ac7d 100644
--- a/pkgs/development/libraries/haskell/pretty-show/default.nix
+++ b/pkgs/development/libraries/haskell/pretty-show/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "pretty-show";
-  version = "1.1.1";
-  sha256 = "0w6r68l1452vh9aqnlh4066y62h8ylh45gbsl5l558wjgchlna5k";
+  version = "1.2";
+  sha256 = "0lbalmyrqisgd2spbvzifsy25lr6cl9sgz78hav8q8r406k7nf2l";
   isLibrary = true;
   isExecutable = true;
   buildDepends = [ haskellLexer ];