diff --git a/requirements.txt b/requirements.txt
index 75b56e8..236c323 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -47,7 +47,7 @@ pandas==0.24.2
 Pillow==6.0.0
 Pillow-PIL==0.1.dev0
 pluginlib==1.11.3
-protobuf==3.7.1
+protobuf==3.15.0
 pyparsing==2.4.0
 python-dateutil==2.8.0
 python-qt-binding==0.3.4