diff --git a/requirements.txt b/requirements.txt
index 9dd61d6..19e891c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ mock==3.0.5
 numpy==1.16.4
 opencv-python==4.1.0.25
 Pillow==6.2.0
-protobuf==3.8.0
+protobuf==3.15.0
 pycparser==2.19
 pyparsing==2.4.0
 python-dateutil==2.8.0