diff --git a/requirements.txt b/requirements.txt
index 007d9b1..c3b15b5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ Pillow==6.0.0
 pkg-resources==0.0.0
 plotly==4.1.1
 prompt-toolkit==2.0.9
-protobuf==3.8.0
+protobuf==3.15.0
 psutil==5.6.3
 ptyprocess==0.6.0
 pydot==1.4.1