diff --git a/pkgs/development/ocaml-modules/arp/default.nix b/pkgs/development/ocaml-modules/arp/default.nix
index c6a18ad87d88..72ffe195a89f 100644
--- a/pkgs/development/ocaml-modules/arp/default.nix
+++ b/pkgs/development/ocaml-modules/arp/default.nix
@@ -8,6 +8,7 @@
   ethernet,
   ipaddr,
   logs,
+  lru,
   lwt,
   macaddr,
   mirage-sleep,
@@ -18,21 +19,20 @@
 
 buildDunePackage (finalAttrs: {
   pname = "arp";
-  version = "4.0.0";
+  version = "4.1.0";
 
   src = fetchurl {
     url = "https://github.com/mirage/arp/releases/download/v${finalAttrs.version}/arp-${finalAttrs.version}.tbz";
-    hash = "sha256-C2Bh/2NwZqCJEidCnkhwRMoW3AsbQtvwdFh9IiJkDaU=";
+    hash = "sha256-AvjxveUgSRBNhZQvCp1oa+JfEXSIronECk4nNos8hl0=";
   };
 
-  minimalOCamlVersion = "4.08";
-
   propagatedBuildInputs = [
     cstruct
     duration
     ethernet
     ipaddr
     logs
+    lru
     lwt
     macaddr
     mirage-sleep