diff --git a/backend/requirements.txt b/backend/requirements.txt
index cfa33cb..9951bee 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -24,7 +24,7 @@ Mako==1.1.6
 MarkupSafe==2.0.1
 mnemonic==0.20
 pg8000==1.23.0
-protobuf==3.18.1
+protobuf==3.18.3
 pycparser==2.21
 pycryptodomex==3.11.0
 pydantic==1.8.2