diff --git a/pkgs/tools/networking/mu/default.nix b/pkgs/tools/networking/mu/default.nix
index 5e9d1ea7c1d1..7326242371a3 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 = "1.8.14";
+  version = "1.10.3";
 
   src = fetchFromGitHub {
     owner = "djcb";
     repo = "mu";
     rev = "v${version}";
-    hash = "sha256-m6if0Br9WRPR8POwOM0Iwido3UR/V0BlkuaLcWsf/c0=";
+    hash = "sha256-AqIPdKdNKLnAHIlqgs8zzm7j+iwNvDFWslvp8RjQPnI=";
   };
 
   postPatch = ''