diff --git a/requirements.txt b/requirements.txt
index 8a68414..bb348f7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ MarkupSafe==1.1.1
 multiaddr==0.0.9
 netaddr==0.8.0
 parsimonious==0.8.1
-protobuf==3.12.2
+protobuf==3.18.3
 pycryptodome==3.9.8
 pyrsistent==0.16.0
 requests==2.24.0