diff --git a/pkgs/tools/networking/stunnel/default.nix b/pkgs/tools/networking/stunnel/default.nix
index 52fa43340b6326e..f9c33298fc316bd 100644
--- a/pkgs/tools/networking/stunnel/default.nix
+++ b/pkgs/tools/networking/stunnel/default.nix
@@ -2,12 +2,12 @@
 
 stdenv.mkDerivation rec {
   pname = "stunnel";
-  version = "5.64";
+  version = "5.65";
 
   src = fetchurl {
     url    = "https://www.stunnel.org/downloads/${pname}-${version}.tar.gz";
-    sha256 = "sha256-7r5T7RFrpDsueGdisMK5FRHnt0hXrUdlgk5xmeb6+IM=";
-    # please use the contents of "https://www.stunnel.org/downloads/${name}.tar.gz.sha256",
+    sha256 = "60c500063bd1feff2877f5726e38278c086f96c178f03f09d264a2012d6bf7fc";
+    # please use the contents of "https://www.stunnel.org/downloads/stunnel-${version}.tar.gz.sha256",
     # not the output of `nix-prefetch-url`
   };