diff --git a/requirements.txt b/requirements.txt
index 581ab9cf..6146ed45 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ pbr==1.7.0
 pexpect==3.3
 pickleshare==0.5
 Pillow==2.9.0
-protobuf==2.6.1
+protobuf==3.18.3
 pyparsing==2.0.3
 python-dateutil==2.4.2
 pytz==2015.4