diff --git a/migrate/versioning/script/py.py b/migrate/versioning/script/py.py
index 93ad776..9aeb3f4 100644
--- a/migrate/versioning/script/py.py
+++ b/migrate/versioning/script/py.py
@@ -12,6 +12,7 @@ from migrate.versioning.config import operations
 from migrate.versioning.template import Template
 from migrate.versioning.script import base
 from migrate.versioning.util import import_path, load_model, with_engine
+from migrate.changeset.exceptions import *
 
 
 log = logging.getLogger(__name__)
@@ -140,7 +141,7 @@ class PythonScript(base.BaseScript):
             script_func(engine)
         except TypeError:
             warnings.warn("upgrade/downgrade functions must accept engine"
-                " parameter (since version > 0.5.4)", exceptions.MigrateDeprecationWarning)
+                " parameter (since version > 0.5.4)", MigrateDeprecationWarning)
             raise
 
     @property
diff --git a/migrate/versioning/util/__init__.py b/migrate/versioning/util/__init__.py
index 5aefbae..4d39314 100644
--- a/migrate/versioning/util/__init__.py
+++ b/migrate/versioning/util/__init__.py
@@ -14,8 +14,8 @@ from sqlalchemy.pool import StaticPool
 from migrate.versioning import exceptions
 from migrate.versioning.util.keyedinstance import KeyedInstance
 from migrate.versioning.util.importpath import import_path
-from migrate.changeset.exceptions import *
 
+from migrate.changeset import *
 
 log = logging.getLogger(__name__)
 
diff --git a/setup.py b/setup.py
index 85c04ef..c0b6f6b 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@ except ImportError:
     use_setuptools()
     from setuptools import setup, find_packages
 
-required_deps = ['sqlalchemy >= 0.5', 'decorator', 'tempita >= 0.4']
+required_deps = ['SQLAlchemy >= 0.5', 'decorator', 'Tempita >= 0.4', 'setuptools']
 readme_file = open(os.path.join(os.path.dirname(os.path.abspath(__file__)),
                                 'README'))