diff --git a/pkgs/applications/science/logic/coq/8.5.nix b/pkgs/applications/science/logic/coq/8.5.nix
index 104fb02fc450..1485626125d2 100644
--- a/pkgs/applications/science/logic/coq/8.5.nix
+++ b/pkgs/applications/science/logic/coq/8.5.nix
@@ -6,7 +6,7 @@
 {stdenv, fetchurl, writeText, pkgconfig, ocaml, findlib, camlp5, ncurses, lablgtk ? null, csdp ? null}:
 
 let
-  version = "8.5";
+  version = "8.5pl1";
   coq-version = "8.5";
   buildIde = lablgtk != null;
   ideFlags = if buildIde then "-lablgtkdir ${lablgtk}/lib/ocaml/*/site-lib/lablgtk2 -coqide opt" else "";
@@ -23,8 +23,8 @@ stdenv.mkDerivation {
   inherit ocaml camlp5;
 
   src = fetchurl {
-    url = https://coq.inria.fr/distrib/V8.5/files/coq-8.5.tar.gz;
-    sha256 = "0gdfm6k5q1f8sz1xr9ijdkkvwqsb7v8prj21gmwv0z0yp6w2zac9";
+    url = "http://coq.inria.fr/distrib/V${version}/files/coq-${version}.tar.gz";
+    sha256 = "1w2xvm6w16khfn63bp95s25hnkn2ny3w0yqg3lq63gp11aqpbyjb";
   };
 
   buildInputs = [ pkgconfig ocaml findlib camlp5 ncurses lablgtk ];
diff --git a/pkgs/development/coq-modules/coq-ext-lib/default.nix b/pkgs/development/coq-modules/coq-ext-lib/default.nix
index 2eeb6b207b10..d35c062d6e4e 100644
--- a/pkgs/development/coq-modules/coq-ext-lib/default.nix
+++ b/pkgs/development/coq-modules/coq-ext-lib/default.nix
@@ -1,9 +1,10 @@
 { stdenv, fetchFromGitHub, coq }:
 
 let param =
-  if coq.coq-version == "8.4"
-  then { version = "0.9.0"; sha256 = "1n3bk003vvbghbrxkhal6drnc0l65jv9y77wd56is3jw9xgiif0w"; }
-  else { version = "0.9.0-beta3"; sha256 = "1dya0sqp5jjb2cl7cv2ry4gvcr359bkzzqcz0plknf3f1c5zrv0s"; };
+  {
+    "8.4" = { version = "0.9.0"; sha256 = "1n3bk003vvbghbrxkhal6drnc0l65jv9y77wd56is3jw9xgiif0w"; };
+    "8.5" = { version = "0.9.3"; sha256 = "05zff5mrkxpvcsw4gi8whjj5w0mdbqzjmb247lq5b7mry0bypwc5"; };
+  }."${coq.coq-version}";
 in
 
 stdenv.mkDerivation rec {