diff --git a/.travis.yml b/.travis.yml
index 15e53fc..7f0d524 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -28,12 +28,6 @@ matrix:
     env: WAGTAIL="wagtail>=1.9,<1.10"
   - python: "3.5"
     env: WAGTAIL="wagtail>=1.8,<1.9"
-  - python: "3.5"
-    env: WAGTAIL="wagtail>=1.6,<1.7"
-  - python: "3.5"
-    env: WAGTAIL="wagtail>=1.5,<1.6"
-  - python: "3.5"
-    env: WAGTAIL="wagtail>=1.4,<1.5"
 before_script:
   - mysql -e 'create database wagtail_modeltranslation;'
   - psql -c 'create database wagtail_modeltranslation;' -U postgres
diff --git a/runtests.py b/runtests.py
index ccd96a2..ebd557f 100755
--- a/runtests.py
+++ b/runtests.py
@@ -5,10 +5,7 @@ import sys
 import django
 from django.conf import settings
 from django.core.management import call_command
-try:
-    from wagtail import VERSION
-except ImportError:
-    VERSION = 1, 6, 3  # assume it's 1.6.3, the latest version without VERSION
+from wagtail import VERSION
 
 
 def runtests():
@@ -36,7 +33,7 @@ def runtests():
 
         # Configure test environment
         import wagtail
-        if VERSION[0] < 2:
+        if VERSION < (2,):
             WAGTAIL_MODULES = [
                 'wagtail.wagtailcore',
                 'wagtail.wagtailadmin',
@@ -71,7 +68,7 @@ def runtests():
             ]
             WAGTAIL_CORE = 'wagtail.core'
 
-            
+
         settings.configure(
             DATABASES=DATABASES,
             INSTALLED_APPS=[
@@ -93,8 +90,7 @@ def runtests():
             MIDDLEWARE_CLASSES=(),
         )
 
-    if django.VERSION >= (1, 7):
-        django.setup()
+    django.setup()
     failures = call_command(
         'test', 'wagtail_modeltranslation', interactive=False, failfast=False, verbosity=2)
 
diff --git a/setup.py b/setup.py
index 78ee10d..e0c4807 100755
--- a/setup.py
+++ b/setup.py
@@ -45,7 +45,7 @@ setup(
         'wagtail_modeltranslation.migrate.management.commands'],
     package_data={'wagtail_modeltranslation': ['static/wagtail_modeltranslation/css/*.css',
                                                'static/wagtail_modeltranslation/js/*.js']},
-    install_requires=['wagtail>=1.4', 'django-modeltranslation>=0.13b1'],
+    install_requires=['wagtail>=1.8', 'django-modeltranslation>=0.13b1'],
     download_url='https://github.com/infoportugal/wagtail-modeltranslation/archive/v0.8.tar.gz',
     classifiers=[
         'Programming Language :: Python',
diff --git a/wagtail_modeltranslation/patch_wagtailadmin.py b/wagtail_modeltranslation/patch_wagtailadmin.py
index bab8fae..ce61762 100644
--- a/wagtail_modeltranslation/patch_wagtailadmin.py
+++ b/wagtail_modeltranslation/patch_wagtailadmin.py
@@ -27,6 +27,7 @@ try:
     from wagtail.core.models import Page, Site
     from wagtail.core.fields import StreamField, StreamValue
     from wagtail.core.url_routing import RouteResult
+    from wagtail.core.utils import WAGTAIL_APPEND_SLASH
     from wagtail.images.edit_handlers import ImageChooserPanel
     from wagtail.search.index import SearchField
     from wagtail.snippets.models import get_snippet_models
@@ -38,17 +39,11 @@ except ImportError:
     from wagtail.wagtailcore.models import Page, Site
     from wagtail.wagtailcore.fields import StreamField, StreamValue
     from wagtail.wagtailcore.url_routing import RouteResult
+    from wagtail.wagtailcore.utils import WAGTAIL_APPEND_SLASH
     from wagtail.wagtailimages.edit_handlers import ImageChooserPanel
     from wagtail.wagtailsearch.index import SearchField
     from wagtail.wagtailsnippets.models import get_snippet_models
     from wagtail.wagtailsnippets.views.snippets import SNIPPET_EDIT_HANDLERS
-try:
-    from wagtail.core.utils import WAGTAIL_APPEND_SLASH
-except ImportError:
-    try:
-        from wagtail.wagtailcore.utils import WAGTAIL_APPEND_SLASH
-    except ImportError:
-        WAGTAIL_APPEND_SLASH = True  # Wagtail<1.5
 from wagtail_modeltranslation.settings import CUSTOM_SIMPLE_PANELS, CUSTOM_COMPOSED_PANELS
 from wagtail_modeltranslation.utils import compare_class_tree_depth
 
diff --git a/wagtail_modeltranslation/tests/tests.py b/wagtail_modeltranslation/tests/tests.py
index 15a1ed6..87851db 100755
--- a/wagtail_modeltranslation/tests/tests.py
+++ b/wagtail_modeltranslation/tests/tests.py
@@ -12,10 +12,7 @@ from django.test.client import RequestFactory
 from django.test.utils import override_settings
 from django.utils.translation import get_language, trans_real
 from modeltranslation import settings as mt_settings, translator
-try:
-    from wagtail import VERSION
-except ImportError:
-    VERSION = 1, 6, 3  # assume it's 1.6.3, the latest version without VERSION
+from wagtail import VERSION
 from .util import page_factory
 
 from wagtail_modeltranslation.tests.test_settings import TEST_SETTINGS
@@ -47,8 +44,7 @@ class WagtailModeltranslationTransactionTestBase(TransactionTestCase):
         if not WagtailModeltranslationTransactionTestBase.synced:
             # In order to perform only one syncdb
             WagtailModeltranslationTransactionTestBase.synced = True
-            mgr = (override_settings(**TEST_SETTINGS) if django.VERSION < (1, 8)
-                   else dummy_context_mgr())
+            mgr = dummy_context_mgr()
             with mgr:
                 # 1. Reload translation in case USE_I18N was False
                 from django.utils import translation as dj_trans
@@ -324,7 +320,7 @@ class WagtailModeltranslationTest(WagtailModeltranslationTestBase):
 
         page_edit_handler = models.InlinePanelPage.get_edit_handler()
 
-        if VERSION[0] < 2:
+        if VERSION < (2,):
             form = page_edit_handler.get_form_class(models.InlinePanelPage)
         else:
             form = page_edit_handler.get_form_class()
@@ -363,7 +359,7 @@ class WagtailModeltranslationTest(WagtailModeltranslationTestBase):
             from wagtail.wagtailsnippets.views.snippets import get_snippet_edit_handler
         snippet_edit_handler = get_snippet_edit_handler(models.InlinePanelSnippet)
 
-        if VERSION[0] < 2:
+        if VERSION < (2,):
             form = snippet_edit_handler.get_form_class(models.InlinePanelSnippet)
         else:
             form = snippet_edit_handler.get_form_class()