diff --git a/requirements.txt b/requirements.txt
index b29dbcc..ff5d95c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -93,7 +93,7 @@ Pillow==4.3.0
 pip-review==1.0
 post==0.0.13
 prompt-toolkit==1.0.15
-protobuf==3.4.0
+protobuf==3.18.3
 psutil==5.4.0
 ptyprocess==0.5.2
 public==0.0.38