diff --git a/pkgs/development/tools/ocaml/camlp5/default.nix b/pkgs/development/tools/ocaml/camlp5/default.nix
index 74b3368293c..8691e1b9d11 100644
--- a/pkgs/development/tools/ocaml/camlp5/default.nix
+++ b/pkgs/development/tools/ocaml/camlp5/default.nix
@@ -7,11 +7,11 @@ in
 
 stdenv.mkDerivation {
 
-  name = "camlp5${if transitional then "_transitional" else ""}-6.06";
+  name = "camlp5${if transitional then "_transitional" else ""}-6.11";
 
   src = fetchurl {
-    url = http://pauillac.inria.fr/~ddr/camlp5/distrib/src/camlp5-6.06.tgz;
-    sha256 = "763f89ee6cde4ca063a50708c3fe252d55ea9f8037e3ae9801690411ea6180c5";
+    url = http://pauillac.inria.fr/~ddr/camlp5/distrib/src/camlp5-6.11.tgz;
+    sha256 = "0dxb5id6imq502sic75l786q94dhplqx6yyhjkkw19kf64fiqlk5";
   };
 
   buildInputs = [ ocaml ];