diff --git a/requirements.txt b/requirements.txt
index 09aafdc7..6ae64d93 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ matplotlib==2.2.3
 numpy==1.15.1
 opencv-python==3.4.3.18
 Pillow==5.2.0
-protobuf==3.6.1
+protobuf==3.15.0
 pyparsing==2.2.0
 python-dateutil==2.7.3
 pytz==2018.5