diff --git a/requirements.txt b/requirements.txt
index 9394a71..8b5cd4c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 numpy==1.16.3
 Pillow==8.2.0
-protobuf==3.7.1
+protobuf==3.18.3
 six==1.12.0
 tensorboardX==1.6
 torch==1.0.1.post2