diff --git a/Makefile b/Makefile
index ba5cddc..7519626 100644
--- a/Makefile
+++ b/Makefile
@@ -33,9 +33,6 @@ test_no_coverage:
 tox:
 	@tox
 
-#docs:
-	#@cd django_paynova/docs && make html && open _build/html/index.html
-
 register:
 	@python setup.py sdist register
 
diff --git a/README.md b/README.md
index 0060a71..b59d7a1 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ This package provides management command `cleanup_unused_media` for Django appli
     ```
     pip install django-unused-media
     ```
-    Python 2.7, 3.3, 3.4, 3.5, PyPy are tested with tox.
+    Python 2.7, 3.5, PyPy are tested with tox.
     
     Django 1.6, 1.7, 1.8, 1.9 are tested with tox.
 
diff --git a/django_unused_media/cleanup.py b/django_unused_media/cleanup.py
index e045ace..b1821e8 100644
--- a/django_unused_media/cleanup.py
+++ b/django_unused_media/cleanup.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 
 from django.db import models
+from django.apps import apps
 from django.conf import settings
 
 import os
@@ -12,9 +13,18 @@ def _get_file_fields():
         Get all fields which are inherited from FileField
     """
 
+    # get models. Compatibility with 1.6
+
+    if getattr(apps, 'get_models'):
+        all_models = apps.get_models()
+    else:
+        all_models = models.get_models()
+
+    # get fields
+
     fields = []
 
-    for m in models.get_models():
+    for m in all_models:
         for f in m._meta.get_fields():
             if isinstance(f, models.FileField):
                 fields.append(f)
diff --git a/setup.py b/setup.py
index 800f642..11cf6ec 100755
--- a/setup.py
+++ b/setup.py
@@ -24,17 +24,14 @@
     'yanc',
     'preggy',
     'tox<2.0',
-    'ipdb',
     'coveralls',
-    'sphinx',
     'django_nose',
-    'httmock',
     'pypandoc',
 ]
 
 setup(
     name='django-unused-media',
-    version='0.1.3',
+    version='0.1.4',
     description='Delete unused media files from Django project',
     long_description=read_md('README.md'),
     keywords='python django unused media remove delete',
@@ -49,7 +46,9 @@
         'Natural Language :: English',
         'Operating System :: Unix',
         'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: Implementation :: PyPy',
         'Operating System :: OS Independent',
     ],
@@ -58,7 +57,7 @@
     install_requires=[
         # add your dependencies here
         # remember to use 'package-name>=x.y.z,<x.y+1.0' notation (this way you get bugfixes)
-        'django>=1.6,<1.9',
+        'django>=1.6,<1.10',
         'six',
     ],
     extras_require={
diff --git a/tox.ini b/tox.ini
index 1e26131..90dc17b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,14 +11,6 @@ envlist =
     py27-1.7.X,
     py27-1.8.X,
     py27-1.9.X,
-    py33-1.6.X,
-    py33-1.7.X,
-    py33-1.8.X,
-    py33-1.9.X,
-    py34-1.6.X,
-    py34-1.7.X,
-    py34-1.8.X,
-    py34-1.9.X,
     py35-1.6.X,
     py35-1.7.X,
     py35-1.8.X,
@@ -61,70 +53,6 @@ commands =
 deps =
     Django>=1.9,<1.10
 
-[testenv:py33-1.6.X]
-basepython = python3.3
-commands =
-    make setup
-    make test_no_coverage
-deps =
-    Django>=1.6,<1.7
-
-[testenv:py33-1.7.X]
-basepython = python3.3
-commands =
-    make setup
-    make test_no_coverage
-deps =
-    Django>=1.7,<1.8
-
-[testenv:py33-1.8.X]
-basepython = python3.3
-commands =
-    make setup
-    make test_no_coverage
-deps =
-    Django>=1.8,<1.9
-
-[testenv:py33-1.9.X]
-basepython = python3.3
-commands =
-    make setup
-    make test_no_coverage
-deps =
-    Django>=1.9,<1.10
-
-[testenv:py34-1.6.X]
-basepython = python3.4
-commands =
-    make setup
-    make test_no_coverage
-deps =
-    Django>=1.6,<1.7
-
-[testenv:py34-1.7.X]
-basepython = python3.4
-commands =
-    make setup
-    make test_no_coverage
-deps =
-    Django>=1.7,<1.8
-
-[testenv:py34-1.8.X]
-basepython = python3.4
-commands =
-    make setup
-    make test_no_coverage
-deps =
-    Django>=1.8,<1.9
-
-[testenv:py34-1.9.X]
-basepython = python3.4
-commands =
-    make setup
-    make test_no_coverage
-deps =
-    Django>=1.9,<1.10
-
 [testenv:py35-1.6.X]
 basepython = python3.5
 commands =