diff --git a/server/requirements.txt b/server/requirements.txt
index 5f04337..d41edc1 100644
--- a/server/requirements.txt
+++ b/server/requirements.txt
@@ -30,7 +30,7 @@ multiaddr==0.0.8
 netaddr==0.7.19
 parsimonious==0.8.1
 pkg-resources==0.0.0
-protobuf==3.9.0
+protobuf==3.15.0
 pycryptodome==3.8.2
 pydantic==0.30
 pylint==2.3.1