diff --git a/requirements.txt b/requirements.txt
index 8ada52d..84f5f2c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ mkl-random==1.0.1
 numpy==1.15.2
 opencv-contrib-python==3.4.3.18
 opencv-python==3.4.3.18
-protobuf==3.6.1
+protobuf==3.15.0
 pyparsing==2.2.2
 python-dateutil==2.7.3
 pytz==2018.5