diff --git a/requirements.txt b/requirements.txt
index 297952d..823266a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -67,7 +67,7 @@ Pillow==6.2.0
 pipenv==2018.11.26
 prometheus-client==0.7.1
 prompt-toolkit==3.0.3
-protobuf==3.0.0
+protobuf==3.18.3
 ptyprocess==0.6.0
 pycairo==1.16.2
 pycrypto==2.6.1