diff --git a/pkgs/applications/science/logic/coq/HEAD.nix b/pkgs/applications/science/logic/coq/HEAD.nix
index 293fcaf8cee6..edf3091ef169 100644
--- a/pkgs/applications/science/logic/coq/HEAD.nix
+++ b/pkgs/applications/science/logic/coq/HEAD.nix
@@ -3,7 +3,7 @@
 {stdenv, fetchgit, writeText, pkgconfig, ocaml, findlib, camlp5, ncurses, lablgtk ? null}:
 
 let
-  version = "8.5pre-edbd6a21";
+  version = "8.5pre-52f51fb3";
   coq-version = "8.5";
   buildIde = lablgtk != null;
   ideFlags = if buildIde then "-lablgtkdir ${lablgtk}/lib/ocaml/*/site-lib/lablgtk2 -coqide opt" else "";
@@ -17,8 +17,8 @@ stdenv.mkDerivation {
 
   src = fetchgit {
     url = git://scm.gforge.inria.fr/coq/coq.git;
-    rev = "edbd6a211c934778d9721c36463836ef902b4fdd";
-    sha256 = "19zk1lghqljh86z2kv6kpxwzinpkbwxzf244dmszx31zw4zdrskl";
+    rev = "52f51fb385d6a1c90bd7d055185fee50ef2670be";
+    sha256 = "0pgp59j2j8vk7nmcja5smly39dpkqfhpp29wpsn71piq6n52pql3";
   };
 
   buildInputs = [ pkgconfig ocaml findlib camlp5 ncurses lablgtk ];