diff --git a/src/requirements.txt b/src/requirements.txt
index bcb6037..14d9a34 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -20,7 +20,7 @@ MarkupSafe==1.1.1
 mock==2.0.0
 numpy==1.16.2
 pbr==5.1.3
-protobuf==3.7.0
+protobuf==3.15.0
 regex==2017.4.5
 requests==2.21.0
 six==1.12.0