diff --git a/pkgs/tools/package-management/cabal-install/1.20.0.3.nix b/pkgs/tools/package-management/cabal-install/1.20.0.3.nix
index 8c136dc9dbb0..1a18222ed6bc 100644
--- a/pkgs/tools/package-management/cabal-install/1.20.0.3.nix
+++ b/pkgs/tools/package-management/cabal-install/1.20.0.3.nix
@@ -22,6 +22,9 @@ cabal.mkDerivation (self: {
     mkdir $out/etc
     mv bash-completion $out/etc/bash_completion.d
   '';
+  patchPhase = ''
+    sed -i -e 's|random .*1.1,|random,|' cabal-install.cabal
+  '';
   meta = {
     homepage = "http://www.haskell.org/cabal/";
     description = "The command-line interface for Cabal and Hackage";
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index d24cffe4a6c2..1ef16574dba3 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -3143,7 +3143,10 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
   cabalInstall_0_14_0 = callPackage ../tools/package-management/cabal-install/0.14.0.nix {};
   cabalInstall_1_16_0_2 = callPackage ../tools/package-management/cabal-install/1.16.0.2.nix { Cabal = self.Cabal_1_16_0_3; };
   cabalInstall_1_18_0_3 = callPackage ../tools/package-management/cabal-install/1.18.0.3.nix { Cabal = self.Cabal_1_18_1_3; };
-  cabalInstall_1_20_0_3 = callPackage ../tools/package-management/cabal-install/1.20.0.3.nix { Cabal = self.Cabal_1_20_0_2; };
+  cabalInstall_1_20_0_3 = callPackage ../tools/package-management/cabal-install/1.20.0.3.nix {
+    HTTP = self.HTTP.override { network = self.network_2_5_0_0; };
+    Cabal = self.Cabal_1_20_0_2;
+  };
   cabalInstall = self.cabalInstall_1_20_0_3;
 
   codex = callPackage ../development/tools/haskell/codex {};