diff --git a/requirements.txt b/requirements.txt
index 5ca04fd..c1dbfbf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ matplotlib==3.0.2
 multiprocess==0.70.7
 numpy==1.16.0
 osqp==0.5.0
-protobuf==3.6.1
+protobuf==3.15.0
 pyparsing==2.3.1
 python-dateutil==2.7.5
 PyYAML==3.13