diff --git a/pkgs/applications/misc/fetchmail/default.nix b/pkgs/applications/misc/fetchmail/default.nix
index fab83b75e7c9..83d4103bc0c1 100644
--- a/pkgs/applications/misc/fetchmail/default.nix
+++ b/pkgs/applications/misc/fetchmail/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, openssl }:
 
 let
-  version = "6.4.12";
+  version = "6.4.13";
 in
 stdenv.mkDerivation {
   pname = "fetchmail";
@@ -9,7 +9,7 @@ stdenv.mkDerivation {
 
   src = fetchurl {
     url = "mirror://sourceforge/fetchmail/fetchmail-${version}.tar.xz";
-    sha256 = "11s83af63gs9nnrjb66yq58xriyvi8hzj4ykxp3kws5z3nby111b";
+    sha256 = "1qablzgwx3a516vdhckx3pv716x9r7nyfyr6fbncif861c3cya3x";
   };
 
   buildInputs = [ openssl ];