diff --git a/pkgs/development/tools/misc/arcanist/default.nix b/pkgs/development/tools/misc/arcanist/default.nix
index dfa83ffb312..a6a457c2b58 100644
--- a/pkgs/development/tools/misc/arcanist/default.nix
+++ b/pkgs/development/tools/misc/arcanist/default.nix
@@ -3,18 +3,18 @@
 let
   libphutil = fetchgit {
     url    = "git://github.com/phacility/libphutil.git";
-    rev    = "672c0f7d5da9be6cda619428a9da3b91a670ea2f";
-    sha256 = "830c7abce7244afa188255a6f288c345004cc4be1c8bbe93afa2aa2f1768f025";
+    rev    = "3753a09dfc7e7ee2626946735e420e5b50480f89";
+    sha256 = "86c2613fed23edff58452ceb9fa98ceb559c7e41abdb6752f87ebcf0f50a1a66";
   };
   arcanist = fetchgit {
     url    = "git://github.com/phacility/arcanist.git";
-    rev    = "64d03ff68bf2ff4ef99186472704df8aface9ef3";
-    sha256 = "e9c5f9a9dcb1be0b7fd6f5fbda865e14277ddb0c1cedd256c459b3540ec6ded7";
+    rev    = "4d6d3feb7fc1fb63789554dddee8e489999c1201";
+    sha256 = "e3a9314544c4430ac6e67ba2ae180a96b009b3ab848ba8712fc2b308cf880372";
   };
 in
 stdenv.mkDerivation rec {
   name    = "arcanist-${version}";
-  version = "20150525";
+  version = "20150707";
 
   src = [ arcanist libphutil ];
   buildInputs = [ php makeWrapper flex ];