diff --git a/patches/213339.patch b/patches/213339.patch
new file mode 100644
index 00000000..d3c761df
--- /dev/null
+++ b/patches/213339.patch
@@ -0,0 +1,29 @@
+From 987cce570afab75ccd6f169b26675b79e3d781f7 Mon Sep 17 00:00:00 2001
+From: Charlotte Van Petegem <charlotte@vanpetegem.me>
+Date: Sun, 29 Jan 2023 11:37:41 +0100
+Subject: [PATCH] mu: 1.8.13 -> 1.8.14
+
+---
+ pkgs/tools/networking/mu/default.nix | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/pkgs/tools/networking/mu/default.nix b/pkgs/tools/networking/mu/default.nix
+index 8c09f1e430f69..9d2286e2271f1 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 = "1.8.13";
++  version = "1.8.14";
+ 
+   src = fetchFromGitHub {
+     owner = "djcb";
+     repo = "mu";
+     rev = "v${version}";
+-    hash = "sha256-uXrJOBF3X8UF1ktTfAoYgzc0QBLvyzzGQVJVfs8tjng=";
++    hash = "sha256-m6if0Br9WRPR8POwOM0Iwido3UR/V0BlkuaLcWsf/c0=";
+   };
+ 
+   postPatch = ''