diff --git a/setup.py b/setup.py
index c291b6bca..b6c5c22f1 100644
--- a/setup.py
+++ b/setup.py
@@ -81,7 +81,7 @@ setup(
         "ldap3>=2.8,<2.10",
         "msgpack>=1.0.0, <1.1.0",
         "passlib>=1.6.5, <1.8",
-        "protobuf>=3.14,<3.18",
+        "protobuf>=3.18,<3.19",
         "pyOpenSSL>=20.0,<20.1",
         "pyparsing>=2.4.2,<2.5",
         "pyperclip>=1.6.0,<1.9",