diff --git a/api/controller/api.py b/api/controller/api.py
index e0c5d5a..117de05 100644
--- a/api/controller/api.py
+++ b/api/controller/api.py
@@ -7,10 +7,15 @@
 
 from __future__ import print_function
 
+import sys
+
 from chromite.api import faux
 from chromite.api import router as router_lib
 from chromite.api import validate
 
+assert sys.version_info >= (3, 6), 'This module requires Python 3.6+'
+
+
 # API version number.
 # The major version MUST be updated on breaking changes.
 VERSION_MAJOR = 1