diff --git a/requirements.txt b/requirements.txt
index f14c384..a6a239a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -52,7 +52,7 @@ pickleshare==0.7.4
 pipdeptree==0.13.0
 plotly==3.1.1
 prompt-toolkit==1.0.15
-protobuf==3.6.0
+protobuf==3.18.3
 ptyprocess==0.6.0
 pycodestyle==2.4.0
 pycparser==2.18