diff --git a/requirements.txt b/requirements.txt
index b19ac41..311d51e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,6 +5,6 @@ torch==1.3.1
 numpy==1.17.4
 tqdm==4.32.1
 apex==0.9.10dev
-protobuf==3.11.2
+protobuf==3.18.3
 scikit_learn==0.22.1
 google-cloud-translate==1.6.0