diff --git a/requirements.txt b/requirements.txt
index cd98978..54abb67 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ numpy==1.19.0
 Pillow==7.2.0
 plac==1.1.3
 preshed==3.0.2
-protobuf==3.12.2
+protobuf==3.18.3
 pyparsing==2.4.7
 python-dateutil==2.8.1
 pytorch-nlp==0.5.0