diff --git a/backend/facial_recognition/requirements.txt b/backend/facial_recognition/requirements.txt
index a6f9cdf..2627234 100644
--- a/backend/facial_recognition/requirements.txt
+++ b/backend/facial_recognition/requirements.txt
@@ -23,7 +23,7 @@ msgpack==0.6.1
 numpy==1.17.2
 openalpr==1.0
 opencv-python==4.1.1.26
-protobuf==3.9.1
+protobuf==3.15.0
 pyasn1==0.4.7
 pyasn1-modules==0.2.6
 python-firebase==1.2