diff --git a/requirements.txt b/requirements.txt
index 0a51a30..fe485b4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -52,7 +52,7 @@ pickleshare==0.7.4
 Pillow==5.1.0
 progressbar2==3.38.0
 prompt-toolkit==1.0.15
-protobuf==3.5.2.post1
+protobuf==3.18.3
 ptyprocess==0.5.2
 Pygments==2.2.0
 pyparsing==2.2.0