diff --git a/requirements.txt b/requirements.txt
index 32a848c..3aced7f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,6 @@ numpy==1.16.3
 matplotlib==3.0.3
 opencv_python==4.1.0.25
 Pillow==6.0.0
-protobuf==3.8.0
+protobuf==3.15.0
 tensorboardcolab==0.0.22
 tensorflow==1.13.1