diff --git a/requirements.txt b/requirements.txt
index 0167dbd..a993292 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ oauthlib==3.1.0
 olefile==0.46
 opencv-python==4.2.0.34
 Pillow==7.0.0
-protobuf==3.11.3
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pybullet==2.7.2