diff --git a/Backend/flask_api/requirements.txt b/Backend/flask_api/requirements.txt
index 94543170..4059421f 100644
--- a/Backend/flask_api/requirements.txt
+++ b/Backend/flask_api/requirements.txt
@@ -44,7 +44,7 @@ packaging==20.9
 pathy==0.5.2
 preshed==3.0.5
 proto-plus==1.18.1
-protobuf==3.15.8
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pycparser==2.20