diff --git a/pkgs/development/libraries/haskell/attoparsec/0.11.3.0.nix b/pkgs/development/libraries/haskell/attoparsec/0.11.3.1.nix
similarity index 86%
rename from pkgs/development/libraries/haskell/attoparsec/0.11.3.0.nix
rename to pkgs/development/libraries/haskell/attoparsec/0.11.3.1.nix
index 2a46c5a6b8dc..74920ea7b097 100644
--- a/pkgs/development/libraries/haskell/attoparsec/0.11.3.0.nix
+++ b/pkgs/development/libraries/haskell/attoparsec/0.11.3.1.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "attoparsec";
-  version = "0.11.3.0";
-  sha256 = "1vnkm5pf0a381is4i0zyi41p4jv184lqpv1z9aadsnavpg0841qs";
+  version = "0.11.3.1";
+  sha256 = "0mmyab3a9mgmfxj1kc7xgxkmmcdj90ph9nzniv7bf2vyf8vhvirl";
   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 effbda083016..8aa4ac59de35 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -190,8 +190,8 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
   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_3_0 = callPackage ../development/libraries/haskell/attoparsec/0.11.3.0.nix {};
-  attoparsec = self.attoparsec_0_11_3_0;
+  attoparsec_0_11_3_1 = callPackage ../development/libraries/haskell/attoparsec/0.11.3.1.nix {};
+  attoparsec = self.attoparsec_0_11_3_1;
 
   attoparsecBinary = callPackage ../development/libraries/haskell/attoparsec-binary {};
 
@@ -2372,10 +2372,10 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
   word8 = callPackage ../development/libraries/haskell/word8 {};
 
   wreq = callPackage ../development/libraries/haskell/wreq {
-    aeson = self.aeson.override { attoparsec = self.attoparsec_0_11_3_0; };
-    attoparsec = self.attoparsec_0_11_3_0;
+    aeson = self.aeson.override { attoparsec = self.attoparsec_0_11_3_1; };
+    attoparsec = self.attoparsec_0_11_3_1;
     lens = self.lens.override {
-      aeson = self.aeson.override { attoparsec = self.attoparsec_0_11_3_0; };
+      aeson = self.aeson.override { attoparsec = self.attoparsec_0_11_3_1; };
     };
   };