diff --git a/pkgs/tools/networking/stunnel/default.nix b/pkgs/tools/networking/stunnel/default.nix
index f8b6c845a52e..befc1c3c3eef 100644
--- a/pkgs/tools/networking/stunnel/default.nix
+++ b/pkgs/tools/networking/stunnel/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "stunnel";
-  version = "5.58";
+  version = "5.59";
 
   src = fetchurl {
     url    = "https://www.stunnel.org/downloads/${pname}-${version}.tar.gz";
-    sha256 = "d4c14cc096577edca3f6a2a59c2f51869e35350b3988018ddf808c88e5973b79";
+    sha256 = "sha256-E3d232vo8XAfHNWQt3eZMuEjR5+5HlGSFxwWeYgVzp8=";
     # please use the contents of "https://www.stunnel.org/downloads/${name}.tar.gz.sha256",
     # not the output of `nix-prefetch-url`
   };