diff --git a/requirements.txt b/requirements.txt
index 81f6182..e0cb96a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -49,7 +49,7 @@ plac==0.9.6
 preshed==2.0.1
 prometheus-client==0.7.1
 prompt-toolkit==2.0.9
-protobuf==3.8.0
+protobuf==3.18.3
 Pygments==2.4.2
 pyrsistent==0.15.4
 python-dateutil==2.8.0