diff --git a/requirements.txt b/requirements.txt
index 9bcaff9..b025ba0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ munch==2.3.2
 numpy==1.16.4
 Pillow==6.0.0
 pretrainedmodels==0.7.4
-protobuf==3.8.0
+protobuf==3.15.0
 scikit-learn==0.21.2
 scipy==1.3.0
 six==1.12.0