diff --git a/requirements.txt b/requirements.txt
index 5fbfdac..f85e98d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -47,7 +47,7 @@ pandas==0.24.2
 pathlib2==2.3.5
 Pillow==6.2.1
 pluggy==0.13.0
-protobuf==3.10.0
+protobuf==3.15.0
 py==1.8.0
 pyasn1==0.4.7
 pyasn1-modules==0.2.7