diff --git a/pkgs/development/ocaml-modules/mirage-net/default.nix b/pkgs/development/ocaml-modules/mirage-net/default.nix
index a29727d7ee17..bc7ae7d96b3c 100644
--- a/pkgs/development/ocaml-modules/mirage-net/default.nix
+++ b/pkgs/development/ocaml-modules/mirage-net/default.nix
@@ -4,13 +4,13 @@
 
 buildDunePackage rec {
   pname = "mirage-net";
-  version = "3.0.1";
+  version = "4.0.0";
 
   useDune2 = true;
 
   src = fetchurl {
     url = "https://github.com/mirage/mirage-net/releases/download/v${version}/mirage-net-v${version}.tbz";
-    sha256 = "0yfvl0fgs7xy5i7kkparaa7a315a2h7kb1z24fmmnwnyaji57dg3";
+    sha256 = "sha256-Zo7/0Ye4GgqzJFCHDBXbuJ/5ETl/8ziolRgH4lDhlM4=";
   };
 
   propagatedBuildInputs = [ cstruct fmt lwt macaddr mirage-device ];