diff --git a/requirements.txt b/requirements.txt
index 203b1a0..546e931 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ pickleshare==0.7.4
 Pillow==5.3.0
 pkg-resources==0.0.0
 prompt-toolkit==1.0.15
-protobuf==3.6.1
+protobuf==3.18.3
 ptyprocess==0.5.2
 Pygments==2.2.0
 scandir==1.6