diff --git a/requirements.txt b/requirements.txt
index 8e74820..b4c60bd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ nltk==3.5
 numpy==1.18.3
 oauthlib==3.1.0
 pandas==1.0.3
-protobuf==3.11.3
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pymongo==3.10.1