diff --git a/requirements.txt b/requirements.txt
index f26ad214..fa494e82 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ python-monascaclient>=1.7.0 # Apache-2.0
 python-keystoneclient>=3.8.0 # Apache-2.0
 redis>=2.10.0 # MIT
 six>=1.9.0 # MIT
-supervisor>=3.1.3,<3.4
+supervisor>=3.3.3,<3.4 # BSD-derived
 stevedore>=1.20.0 # Apache-2.0
 tornado>=4.3,<=4.5.2
 futures>=3.0;python_version=='2.7' or python_version=='2.6' # BSD