diff --git a/requirements.txt b/requirements.txt
index e30b60f..3e4b23b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ numpy==1.16.3
 opencv-python==4.1.0.25
 pbr==5.2.0
 Pillow==6.0.0
-protobuf==3.7.1
+protobuf==3.18.3
 scipy==1.2.1
 six==1.12.0
 tensorboard==1.13.1