diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 9f28194d95e..c86e554b359 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -15197,15 +15197,20 @@ in {
 
   slixmpp = buildPythonPackage rec {
     name = "slixmpp-${version}";
-    version = "1.1";
+    version = "1.2.1";
 
     disabled = pythonOlder "3.4";
 
     src = pkgs.fetchurl {
       url = "mirror://pypi/s/slixmpp/${name}.tar.gz";
-      sha256 = "030ca7e71cbb7e17fb48f83db97779fdbac0b4424cef01245f3276a110b30a6c";
+      sha256 = "0fwngxf2pnmpk8vhv4pfxvl1ya3nxr4kc2z6jrh2imynbry3xfj9";
     };
 
+    patchPhase = ''
+      substituteInPlace slixmpp/thirdparty/gnupg.py \
+        --replace "gpgbinary='gpg'" "gpgbinary='${pkgs.gnupg1}/bin/gpg'"
+    '';
+
     propagatedBuildInputs = with self ; [ aiodns pyasn1 pkgs.gnupg1 pyasn1-modules];
 
     meta = {