diff --git a/requirements.txt b/requirements.txt
index 0903556..f8fe3ab 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -80,7 +80,7 @@ parsimonious==0.8.1
 plac==0.9.6
 pluggy==0.13.0
 preshed==2.0.1
-protobuf==3.10.0
+protobuf==3.18.3
 py==1.8.0
 pyasn1-modules==0.2.7
 pyasn1==0.4.8