diff --git a/requirements.txt b/requirements.txt
index 3081fff..5d25eaf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -41,7 +41,7 @@ pickleshare==0.7.4
 Pillow==5.2.0
 progressbar2==3.38.0
 prompt-toolkit==2.0.4
-protobuf==3.6.1
+protobuf==3.18.3
 ptyprocess==0.6.0
 Pygments==2.2.0
 pyparsing==2.2.0