diff --git a/requirements.txt b/requirements.txt
index bb1efe9..0c10328 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ numpy==1.16.1
 pandas==0.24.1
 pbr==5.1.3
 Pillow==6.0.0
-protobuf==3.7.1
+protobuf==3.15.0
 pyaml==18.11.0
 pylint==2.2.2
 pyparsing==2.3.1