diff --git a/pkgs/tools/networking/mubeng/default.nix b/pkgs/tools/networking/mubeng/default.nix
index a214d00b9812..f7e4a6d25476 100644
--- a/pkgs/tools/networking/mubeng/default.nix
+++ b/pkgs/tools/networking/mubeng/default.nix
@@ -5,13 +5,13 @@
 
 buildGoModule rec {
   pname = "mubeng";
-  version = "0.11.0";
+  version = "0.12.0-dev";
 
   src = fetchFromGitHub {
     owner = "kitabisa";
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-BY3X9N7XnBZ6mVX/o+EXruJmi3HYWMeY9enSuJY4jWI=";
+    sha256 = "sha256-NBZmu0VcVUhJSdM3fzZ+4Q5oX8uxO6GLpEUq74x8HUU=";
   };
 
   vendorSha256 = "sha256-1JxyP6CrJ4/g7o3eGeN1kRXJU/jNLEB8fW1bjJytQqQ=";