--- requirements/zeromq.txt.old	2021-10-27 08:27:29.631303000 +0200
+++ requirements/zeromq.txt	2021-10-27 08:27:56.967052000 +0200
@@ -2,5 +2,5 @@
 -r crypto.txt
 
 pyzmq<=20.0.0 ; python_version < "3.6"
-pyzmq>=17.0.0,<22.0.0 ; python_version < "3.9"
-pyzmq>19.0.2,<22.0.0 ; python_version >= "3.9"
+pyzmq>=17.0.0 ; python_version < "3.9"
+pyzmq>19.0.2 ; python_version >= "3.9"