diff --git a/pip-requirements.txt b/pip-requirements.txt
index 3259e16..ef631de 100644
--- a/pip-requirements.txt
+++ b/pip-requirements.txt
@@ -17,7 +17,7 @@ MarkupSafe==1.1.1
 mysql-connector-python==8.0.17
 mysqlclient==1.4.6
 numpy==1.15.4
-protobuf==3.6.1
+protobuf==3.15.0
 pyasn1==0.4.4
 pyasn1-modules==0.2.2
 pybind11==2.5.0