diff --git a/requirements.txt b/requirements.txt
index a75ff02..7a9a449 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ lru-dict==1.1.6
 multiaddr==0.0.9
 netaddr==0.7.19
 parsimonious==0.8.1
-protobuf==3.11.3
+protobuf==3.18.3
 pycryptodome==3.9.6
 pyrsistent==0.15.7
 python-dotenv==0.20.0