diff --git a/requirements.txt b/requirements.txt
index d9380f6..874638b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ nltk==3.4.5
 numpy==1.16.4
 pandas==0.24.2
 Pillow==6.2.1
-protobuf==3.8.0
+protobuf==3.15.0
 pyparsing==2.4.0
 python-dateutil==2.8.0
 python-dotenv==0.10.3