diff --git a/pkgs/development/libraries/haskell/attoparsec/0.11.2.1.nix b/pkgs/development/libraries/haskell/attoparsec/0.11.3.0.nix
similarity index 86%
rename from pkgs/development/libraries/haskell/attoparsec/0.11.2.1.nix
rename to pkgs/development/libraries/haskell/attoparsec/0.11.3.0.nix
index 2a2117a1a05..2a46c5a6b8d 100644
--- a/pkgs/development/libraries/haskell/attoparsec/0.11.2.1.nix
+++ b/pkgs/development/libraries/haskell/attoparsec/0.11.3.0.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "attoparsec";
-  version = "0.11.2.1";
-  sha256 = "1grvmhxiqn02wbng0wd9zqc4c51wrbxar1b26agc3p9i09ngbs1w";
+  version = "0.11.3.0";
+  sha256 = "1vnkm5pf0a381is4i0zyi41p4jv184lqpv1z9aadsnavpg0841qs";
   buildDepends = [ deepseq scientific text ];
   testDepends = [
     QuickCheck testFramework testFrameworkQuickcheck2 text
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index e92fec5f775..e26e8330554 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -142,7 +142,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
   haskellPlatformArgs_future = self : {
     inherit (self) cabal ghc;
     async        = self.async_2_0_1_5;
-    attoparsec   = self.attoparsec_0_11_2_1;
+    attoparsec   = self.attoparsec_0_11_3_0;
     caseInsensitive = self.caseInsensitive_1_2_0_0;
     cgi          = self.cgi_3001_1_8_5;
     fgl          = self.fgl_5_4_2_4;
@@ -593,8 +593,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
   attoLisp = callPackage ../development/libraries/haskell/atto-lisp {};
 
   attoparsec_0_10_4_0 = callPackage ../development/libraries/haskell/attoparsec/0.10.4.0.nix {};
-  attoparsec_0_11_2_1 = callPackage ../development/libraries/haskell/attoparsec/0.11.2.1.nix {};
-  attoparsec = self.attoparsec_0_10_4_0;
+  attoparsec_0_11_3_0 = callPackage ../development/libraries/haskell/attoparsec/0.11.3.0.nix {};
+  attoparsec = self.attoparsec_0_11_3_0;
 
   attoparsecBinary = callPackage ../development/libraries/haskell/attoparsec-binary {};