diff --git a/pkgs/development/ocaml-modules/ocamlnet/default.nix b/pkgs/development/ocaml-modules/ocamlnet/default.nix
index 7d9a0573db7b..5b6e0dde8b75 100644
--- a/pkgs/development/ocaml-modules/ocamlnet/default.nix
+++ b/pkgs/development/ocaml-modules/ocamlnet/default.nix
@@ -8,11 +8,11 @@ else
 
 stdenv.mkDerivation rec {
   name = "ocaml${ocaml.version}-ocamlnet-${version}";
-  version = "4.1.7";
+  version = "4.1.8";
 
   src = fetchurl {
     url = "http://download.camlcity.org/download/ocamlnet-${version}.tar.gz";
-    sha256 = "0r9gl0lsgxk2achixxqzm8bm5l9jwc4vwihf0rvxxa9v9q9vfdhi";
+    sha256 = "1x703mjqsv9nvffnkj5i36ij2s5zfvxxll2z1qj6a7p428b2yfnm";
   };
 
   nativeBuildInputs = [ pkgconfig ];