diff --git a/requirements.txt b/requirements.txt
index aa01db7..dc42b52 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 numpy==1.18.2
 Pillow==7.0.0
 pkg-resources==0.0.0
-protobuf==3.11.3
+protobuf==3.15.0
 six==1.14.0
 tensorboardX==2.0
 torch==1.4.0