diff --git a/requirements.txt b/requirements.txt
index 76c196c..b04d301 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -53,7 +53,7 @@ pickleshare==0.7.4
 Pillow==3.1.2
 progressbar==2.3
 prompt-toolkit==1.0.7
-protobuf==3.2.0
+protobuf==3.18.3
 psutil==3.4.2
 ptyprocess==0.5.1
 pydot==1.0.29