diff --git a/pkgs/development/libraries/haskell/HTTP/4000.2.5.nix b/pkgs/development/libraries/haskell/HTTP/4000.2.5.nix
new file mode 100644
index 000000000000..f345e7c98e1c
--- /dev/null
+++ b/pkgs/development/libraries/haskell/HTTP/4000.2.5.nix
@@ -0,0 +1,15 @@
+{ cabal, mtl, network, parsec }:
+
+cabal.mkDerivation (self: {
+  pname = "HTTP";
+  version = "4000.2.5";
+  sha256 = "03ij1zkykc438x2r1szz6ddvfhrjywlx61nrz377srcpbdmhxpb7";
+  buildDepends = [ mtl network parsec ];
+  meta = {
+    homepage = "https://github.com/haskell/HTTP";
+    description = "A library for client-side HTTP";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+    maintainers = [ self.stdenv.lib.maintainers.andres ];
+  };
+})
diff --git a/pkgs/development/libraries/haskell/async/2.0.1.3.nix b/pkgs/development/libraries/haskell/async/2.0.1.3.nix
new file mode 100644
index 000000000000..a0da6384e958
--- /dev/null
+++ b/pkgs/development/libraries/haskell/async/2.0.1.3.nix
@@ -0,0 +1,15 @@
+{ cabal, stm }:
+
+cabal.mkDerivation (self: {
+  pname = "async";
+  version = "2.0.1.3";
+  sha256 = "1rbjr6xw5sp8npw17fxg0942kikssv2hyci2sy26r0na98483mkh";
+  buildDepends = [ stm ];
+  meta = {
+    homepage = "https://github.com/simonmar/async";
+    description = "Run IO operations asynchronously and wait for their results";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+    maintainers = [ self.stdenv.lib.maintainers.andres ];
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 863413d5eb9a..583e927d6462 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -155,13 +155,13 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   haskellPlatformArgs_2012_4_0_0 = self : {
     inherit (self) cabal ghc;
-    async        = self.async_2_0_1_4;
+    async        = self.async_2_0_1_3;
     cgi          = self.cgi_3001_1_7_4;
     fgl          = self.fgl_5_4_2_4;
     GLUT         = self.GLUT_2_1_2_1;
     haskellSrc   = self.haskellSrc_1_0_1_5;
     html         = self.html_1_0_1_2;
-    HTTP         = self.HTTP_4000_2_6;
+    HTTP         = self.HTTP_4000_2_5;
     HUnit        = self.HUnit_1_2_5_1;
     mtl          = self.mtl_2_1_2;
     network      = self.network_2_3_1_0;
@@ -461,6 +461,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   AspectAG = callPackage ../development/libraries/haskell/AspectAG {};
 
+  async_2_0_1_3 = callPackage ../development/libraries/haskell/async/2.0.1.3.nix {};
   async_2_0_1_4 = callPackage ../development/libraries/haskell/async/2.0.1.4.nix {};
   async = self.async_2_0_1_4;
 
@@ -914,6 +915,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
   HTTP_4000_2_1 = callPackage ../development/libraries/haskell/HTTP/4000.2.1.nix {};
   HTTP_4000_2_2 = callPackage ../development/libraries/haskell/HTTP/4000.2.2.nix {};
   HTTP_4000_2_3 = callPackage ../development/libraries/haskell/HTTP/4000.2.3.nix {};
+  HTTP_4000_2_5 = callPackage ../development/libraries/haskell/HTTP/4000.2.5.nix {};
   HTTP_4000_2_6 = callPackage ../development/libraries/haskell/HTTP/4000.2.6.nix {};
   HTTP = self.HTTP_4000_2_6;