diff --git a/requirements.txt b/requirements.txt
index 3e2049f..17f8850 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -79,7 +79,7 @@ plac==1.1.3
 preshed==3.0.2
 prometheus-client==0.7.1
 prompt-toolkit==3.0.5
-protobuf==3.11.3
+protobuf==3.18.3
 ptyprocess==0.6.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8