diff --git a/requirements.txt b/requirements.txt
index a7b1842..0a7c2bb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-protobuf==3.7.1
+protobuf==3.18.3
 pycryptodome==3.8.1
 six==1.12.0