diff --git a/pkgs/applications/networking/msmtp/default.nix b/pkgs/applications/networking/msmtp/default.nix
index ee5ea9d7e03..bfa98b94d0a 100644
--- a/pkgs/applications/networking/msmtp/default.nix
+++ b/pkgs/applications/networking/msmtp/default.nix
@@ -9,11 +9,11 @@ let
 
 in stdenv.mkDerivation rec {
   pname = "msmtp";
-  version = "1.8.12";
+  version = "1.8.13";
 
   src = fetchurl {
     url = "https://marlam.de/${pname}/releases/${pname}-${version}.tar.xz";
-    sha256 = "0m33m5bc7ajmgy7vivnzj3mhybg37259hx79xypj769kfyafyvx8";
+    sha256 = "1fcv99nis7c6yc63n04cncjysv9jndrp469gcfxh54aiinmlbadd";
   };
 
   patches = [