diff --git a/pkgs/development/libraries/haskell/parsers/0.12.nix b/pkgs/development/libraries/haskell/parsers/0.12.1.nix
similarity index 88%
rename from pkgs/development/libraries/haskell/parsers/0.12.nix
rename to pkgs/development/libraries/haskell/parsers/0.12.1.nix
index bb383b078aa7..5c49d144a10e 100644
--- a/pkgs/development/libraries/haskell/parsers/0.12.nix
+++ b/pkgs/development/libraries/haskell/parsers/0.12.1.nix
@@ -6,8 +6,8 @@
 
 cabal.mkDerivation (self: {
   pname = "parsers";
-  version = "0.12";
-  sha256 = "0lb1djb2mmlkfqpbz7683i27d3ivv0r99l6w79951wgsqb62xph3";
+  version = "0.12.1";
+  sha256 = "0g9grf713zhn23vgmb6mdrm8r5snq1xa8jqnj6pghydj6m4rh97v";
   buildDepends = [
     attoparsec charset parsec text transformers unorderedContainers
   ];
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 4cf74b36a60e..d6d092a847d1 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1743,8 +1743,8 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
   parsec = self.parsec_3_1_5;
 
   parsers_0_10_3 = callPackage ../development/libraries/haskell/parsers/0.10.3.nix {};
-  parsers_0_12 = callPackage ../development/libraries/haskell/parsers/0.12.nix {};
-  parsers = self.parsers_0_12;
+  parsers_0_12_1 = callPackage ../development/libraries/haskell/parsers/0.12.1.nix {};
+  parsers = self.parsers_0_12_1;
 
   parsimony = callPackage ../development/libraries/haskell/parsimony {};