diff --git a/docker_build.py b/docker_build.py
index ebcba8ec91943a52ede7e0103798d0f5d7b3fed0_ZG9ja2VyX2J1aWxkLnB5..8c58098d3026305ce51b037cb8483740c622fc76_ZG9ja2VyX2J1aWxkLnB5 100755
--- a/docker_build.py
+++ b/docker_build.py
@@ -11,7 +11,7 @@
 from subprocess import call
 import sys
 
-import ConfigParser
+from six.moves import configparser
 
 import docker  # apt python-docker (1.9) or pip install docker
 
@@ -101,7 +101,7 @@
     dev = nmspc.dev
     push = nmspc.push
 
-    c = ConfigParser.ConfigParser()
+    c = configparser.ConfigParser()
     if not os.path.exists(setup_path):
         logging.fatal('Missing %s', setup_path)
         return 12