Index: requirements.txt
--- requirements.txt.orig
+++ requirements.txt
@@ -4,8 +4,7 @@ requests>=2.9.1
 urllib3<2
 vdf>=3.3
 gevent>=1.3.0
-protobuf~=3.0; python_version >= '3'
-protobuf<3.18.0; python_version < '3'
+protobuf
 gevent-eventemitter~=2.1
 cachetools>=3.0.0
 enum34==1.1.2; python_version < '3.4'
