diff --git a/pkgs/tools/networking/mu/default.nix b/pkgs/tools/networking/mu/default.nix
index 891a42ae1cdce..8ea4a628f87d3 100644
--- a/pkgs/tools/networking/mu/default.nix
+++ b/pkgs/tools/networking/mu/default.nix
@@ -14,13 +14,13 @@
 
 stdenv.mkDerivation rec {
   pname = "mu";
-  version = "1.10.3";
+  version = "1.10.4";
 
   src = fetchFromGitHub {
     owner = "djcb";
     repo = "mu";
     rev = "v${version}";
-    hash = "sha256-AqIPdKdNKLnAHIlqgs8zzm7j+iwNvDFWslvp8RjQPnI=";
+    hash = "sha256-vwStqrw/fPYUpBhBsLX0MPXtBtP5LwU0AYmUbP+Ywgo=";
   };
 
   postPatch = ''