diff --git a/IPython/html/services/contents/tests/test_contents_api.py b/IPython/html/services/contents/tests/test_contents_api.py
index 6d30513..c5ac049 100644
--- a/IPython/html/services/contents/tests/test_contents_api.py
+++ b/IPython/html/services/contents/tests/test_contents_api.py
@@ -24,9 +24,16 @@ from IPython.nbformat.v4 import (
 )
 from IPython.nbformat import v2
 from IPython.utils import py3compat
-from IPython.utils.data import uniq_stable
 from IPython.utils.tempdir import TemporaryDirectory
 
+def uniq_stable(elems):
+    """uniq_stable(elems) -> list
+
+    Return from an iterable, a list of all the unique elements in the input,
+    maintaining the order in which they first appear.
+    """
+    seen = set()
+    return [x for x in elems if x not in seen and not seen.add(x)]
 
 def notebooks_only(dir_model):
     return [nb for nb in dir_model['content'] if nb['type']=='notebook']
diff --git a/ipython_kernel/serialize.py b/ipython_kernel/serialize.py
index 1ad9f39..fd3d7ab 100644
--- a/ipython_kernel/serialize.py
+++ b/ipython_kernel/serialize.py
@@ -10,9 +10,9 @@ except:
     cPickle = None
     import pickle
 
-# IPython imports
+from itertools import chain
+
 from IPython.utils.py3compat import PY3, buffer_to_bytes_py2
-from IPython.utils.data import flatten
 from ipython_kernel.pickleutil import (
     can, uncan, can_sequence, uncan_sequence, CannedObject,
     istype, sequence_types, PICKLE_PROTOCOL,
@@ -138,10 +138,12 @@ def pack_apply_message(f, args, kwargs, buffer_threshold=MAX_BYTES, item_thresho
     With length at least two + len(args) + len(kwargs)
     """
 
-    arg_bufs = flatten(serialize_object(arg, buffer_threshold, item_threshold) for arg in args)
+    arg_bufs = list(chain.from_iterable(
+        serialize_object(arg, buffer_threshold, item_threshold) for arg in args))
 
     kw_keys = sorted(kwargs.keys())
-    kwarg_bufs = flatten(serialize_object(kwargs[key], buffer_threshold, item_threshold) for key in kw_keys)
+    kwarg_bufs = list(chain.from_iterable(
+        serialize_object(kwargs[key], buffer_threshold, item_threshold) for key in kw_keys))
 
     info = dict(nargs=len(args), narg_bufs=len(arg_bufs), kw_keys=kw_keys)
 
diff --git a/ipython_parallel/client/map.py b/ipython_parallel/client/map.py
index 67b5b29..a3b908a 100644
--- a/ipython_parallel/client/map.py
+++ b/ipython_parallel/client/map.py
@@ -12,10 +12,7 @@ pieces to individual nodes in a cluster.
 from __future__ import division
 
 import sys
-from itertools import islice
-
-from IPython.utils.data import flatten as utils_flatten
-
+from itertools import islice, chain
 
 numpy = None
 
@@ -75,7 +72,7 @@ class Map(object):
             return numpy.concatenate(listOfPartitions)
         # Next try for Python sequence types
         if isinstance(testObject, (list, tuple)):
-            return utils_flatten(listOfPartitions)
+            return list(chain.from_iterable(listOfPartitions))
         # If we have scalars, just return listOfPartitions
         return listOfPartitions
 
@@ -125,5 +122,3 @@ def mappable(obj):
 
 dists = {'b':Map,'r':RoundRobinMap}
 
-    
-    
diff --git a/jupyter_client/localinterfaces.py b/jupyter_client/localinterfaces.py
index 7480f24..40b8dfa 100644
--- a/jupyter_client/localinterfaces.py
+++ b/jupyter_client/localinterfaces.py
@@ -1,6 +1,6 @@
 """Utilities for identifying local IP addresses."""
 
-# Copyright (c) IPython Development Team.
+# Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
 
 import os
@@ -8,7 +8,6 @@ import re
 import socket
 from subprocess import Popen, PIPE
 
-from IPython.utils.data import uniq_stable
 from warnings import warn
 
 
@@ -17,6 +16,18 @@ PUBLIC_IPS = []
 
 LOCALHOST = ''
 
+
+def _uniq_stable(elems):
+    """uniq_stable(elems) -> list
+
+    Return from an iterable, a list of all the unique elements in the input,
+    maintaining the order in which they first appear.
+    
+    From IPython.utils.data
+    """
+    seen = set()
+    return [x for x in elems if x not in seen and not seen.add(x)]
+
 def _get_output(cmd):
     """Get output of a command, raising IOError if it fails"""
     p = Popen(cmd, stdout=PIPE, stderr=PIPE)
@@ -69,8 +80,8 @@ def _populate_from_list(addrs):
         
     local_ips.extend(['0.0.0.0', ''])
     
-    LOCAL_IPS[:] = uniq_stable(local_ips)
-    PUBLIC_IPS[:] = uniq_stable(public_ips)
+    LOCAL_IPS[:] = _uniq_stable(local_ips)
+    PUBLIC_IPS[:] = _uniq_stable(public_ips)
 
 def _load_ips_ifconfig():
     """load ip addresses from `ifconfig` output (posix)"""
@@ -145,8 +156,8 @@ def _load_ips_netifaces():
         LOCALHOST = '127.0.0.1'
         local_ips.insert(0, LOCALHOST)
     local_ips.extend(['0.0.0.0', ''])
-    LOCAL_IPS[:] = uniq_stable(local_ips)
-    PUBLIC_IPS[:] = uniq_stable(public_ips)
+    LOCAL_IPS[:] = _uniq_stable(local_ips)
+    PUBLIC_IPS[:] = _uniq_stable(public_ips)
 
 
 def _load_ips_gethostbyname():
@@ -170,13 +181,13 @@ def _load_ips_gethostbyname():
     except socket.error:
         pass
     finally:
-        PUBLIC_IPS[:] = uniq_stable(PUBLIC_IPS)
+        PUBLIC_IPS[:] = _uniq_stable(PUBLIC_IPS)
         LOCAL_IPS.extend(PUBLIC_IPS)
     
     # include all-interface aliases: 0.0.0.0 and ''
     LOCAL_IPS.extend(['0.0.0.0', ''])
 
-    LOCAL_IPS[:] = uniq_stable(LOCAL_IPS)
+    LOCAL_IPS[:] = _uniq_stable(LOCAL_IPS)
 
     LOCALHOST = LOCAL_IPS[0]