diff --git a/requirements.txt b/requirements.txt
index e5e1adc..48ed768 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ pymongo
 matplotlib
 mongomock==3.19.0
 google==2.0.3
-protobuf==3.12.1
+protobuf==3.18.3
 pika
 alabaster==0.7.12
 attrs==19.3.0