diff --git a/nengo_dl/neuron_builders.py b/nengo_dl/neuron_builders.py
index a935cf1dc..83490fbad 100644
--- a/nengo_dl/neuron_builders.py
+++ b/nengo_dl/neuron_builders.py
@@ -5,7 +5,6 @@
 import contextlib
 import logging
 import warnings
-from collections import OrderedDict
 
 import numpy as np
 import tensorflow as tf
diff --git a/nengo_dl/process_builders.py b/nengo_dl/process_builders.py
index 64539a656..1c97792c2 100644
--- a/nengo_dl/process_builders.py
+++ b/nengo_dl/process_builders.py
@@ -4,7 +4,6 @@
 
 import contextlib
 import logging
-from collections import OrderedDict
 
 import numpy as np
 import tensorflow as tf
diff --git a/nengo_dl/tests/test_simulator.py b/nengo_dl/tests/test_simulator.py
index 75db1f4c2..e5ce9f6dc 100644
--- a/nengo_dl/tests/test_simulator.py
+++ b/nengo_dl/tests/test_simulator.py
@@ -4,7 +4,6 @@
 import logging
 import pickle
 import sys
-from collections import OrderedDict
 
 import nengo
 import numpy as np