diff --git a/requirements.txt b/requirements.txt
index 879f6e6..6dc8079 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ pickleshare==0.7.5
 Pillow==7.1.2
 plotly==4.8.1
 prompt-toolkit==3.0.5
-protobuf==3.0.0
+protobuf==3.15.0
 ptyprocess==0.6.0
 pycairo==1.16.2
 pycparser==2.20