diff --git a/requirements.txt b/requirements.txt
index e8858e9..3fc81e5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -81,7 +81,7 @@ pickleshare==0.7.4
 Pillow==5.0.0
 pipreqs==0.4.9
 prompt-toolkit==1.0.15
-protobuf==3.5.2.post1
+protobuf==3.18.3
 pyasn1==0.3.6
 pyasn1-modules==0.1.4
 pycparser==2.18