diff --git a/dev_requirements.txt b/dev_requirements.txt
index f093721b..68f0422a 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -3,7 +3,7 @@ ansible==2.6.1
 coverage==4.5.1
 Django==1.6.11  # Last version supporting 2.6.
 mock==2.0.0
-pytz==2012d  # Last 2.6-compat version.
+pytz==2018.5
 paramiko==2.3.2  # Last 2.6-compat version.
 pytest-catchlog==1.2.2
 pytest==3.1.2
diff --git a/tests/module_finder_test.py b/tests/module_finder_test.py
index 9c85e26c..1d5a0796 100644
--- a/tests/module_finder_test.py
+++ b/tests/module_finder_test.py
@@ -353,13 +353,9 @@ class DjangoFindRelatedTest(DjangoMixin, testlib.TestCase):
             'django.utils.translation',
             'django.utils.tree',
             'django.utils.tzinfo',
-            'pkg_resources',
-            'pkg_resources.extern',
-            'pkg_resources.extern.appdirs',
-            'pkg_resources.extern.packaging',
-            'pkg_resources.extern.six',
             'pytz',
             'pytz.exceptions',
+            'pytz.lazy',
             'pytz.tzfile',
             'pytz.tzinfo',
         ])