diff --git a/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix b/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
index 497d8010039..ee36324b774 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
@@ -230,10 +230,6 @@ self: super: {
   unix-time = dontCheck super.unix-time;
 
   # Until the changes have been pushed to Hackage
-  arithmoi = appendPatch super.arithmoi (pkgs.fetchpatch {
-    url = "https://github.com/cartazio/arithmoi/pull/3.patch";
-    sha256 = "1rqs796sh81inqkg2vadskcjpp6q92j6k8zpn370990wndndzzmq";
-  });
   annotated-wl-pprint = appendPatch super.annotated-wl-pprint (pkgs.fetchpatch {
     url = "https://patch-diff.githubusercontent.com/raw/david-christiansen/annotated-wl-pprint/pull/2.patch";
     sha256 = "0n0fbq3vd7b9kfmhg089q0dy40vawq4q88il3zc9ybivhi62nwv4";