diff --git a/services/backend/requirements.txt b/services/backend/requirements.txt
index f80d998..93702d9 100644
--- a/services/backend/requirements.txt
+++ b/services/backend/requirements.txt
@@ -37,7 +37,7 @@ numpy==1.17.2
 opencv-python==4.1.1.26
 opt-einsum==3.1.0
 Pillow==6.2.0
-protobuf==3.10.0
+protobuf==3.18.3
 psycopg2-binary==2.8.3
 pycodestyle==2.5.0
 pycparser==2.19