diff --git a/pkgs/development/ocaml-modules/uucp/default.nix b/pkgs/development/ocaml-modules/uucp/default.nix
index 43f29e738079..4b56214af337 100644
--- a/pkgs/development/ocaml-modules/uucp/default.nix
+++ b/pkgs/development/ocaml-modules/uucp/default.nix
@@ -15,11 +15,11 @@
 stdenv.mkDerivation (finalAttrs: {
   name = "ocaml${ocaml.version}-${finalAttrs.pname}-${finalAttrs.version}";
   pname = "uucp";
-  version = "17.0.0";
+  version = "18.0.0";
 
   src = fetchurl {
     url = "https://erratique.ch/software/uucp/releases/uucp-${finalAttrs.version}.tbz";
-    hash = "sha256-mSQtTn4DYa15pYWFt0J+/BEpJRaa+6uIKnifMV4Euhs=";
+    hash = "sha256-ut7cfFg6entCN2O625f5/UuWmQa5NFyFQifDje1jI/w=";
   };
 
   nativeBuildInputs = [