diff --git a/requirements.txt b/requirements.txt
index 0ef6da1..22a76bf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -56,7 +56,7 @@ pexpect==4.7.0
 pickleshare==0.7.5
 Pillow==6.2.1
 prompt-toolkit==2.0.9
-protobuf==3.11.3
+protobuf==3.18.3
 ptyprocess==0.6.0
 pycparser==2.19
 Pygments==2.4.2