diff --git a/src/pretix/__init__.py b/src/pretix/__init__.py
index e69de29bb..6c8e6b979 100644
--- a/src/pretix/__init__.py
+++ b/src/pretix/__init__.py
@@ -0,0 +1 @@
+__version__ = "0.0.0"
diff --git a/src/pretix/plugins/banktransfer/__init__.py b/src/pretix/plugins/banktransfer/__init__.py
index 9a52cfcf3..5ef3187d4 100644
--- a/src/pretix/plugins/banktransfer/__init__.py
+++ b/src/pretix/plugins/banktransfer/__init__.py
@@ -2,6 +2,7 @@ from django.apps import AppConfig
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext_lazy as _
 
+from pretix import __version__ as version
 from pretix.base.plugins import PluginType
 
 
@@ -13,7 +14,7 @@ class BankTransferApp(AppConfig):
         type = PluginType.PAYMENT
         name = _("Bank transfer")
         author = _("the pretix team")
-        version = '1.0.0'
+        version = version
         description = _("This plugin allows you to receive payments " +
                         "via bank transfer ")
 
diff --git a/src/pretix/plugins/paypal/__init__.py b/src/pretix/plugins/paypal/__init__.py
index f096a33d6..7baae5252 100644
--- a/src/pretix/plugins/paypal/__init__.py
+++ b/src/pretix/plugins/paypal/__init__.py
@@ -2,6 +2,7 @@ from django.apps import AppConfig
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext_lazy as _
 
+from pretix import __version__ as version
 from pretix.base.plugins import PluginType
 
 
@@ -13,7 +14,7 @@ class PaypalApp(AppConfig):
         type = PluginType.PAYMENT
         name = _("PayPal")
         author = _("the pretix team")
-        version = '1.0.0'
+        version = version
         description = _("This plugin allows you to receive payments via PayPal")
 
     def ready(self):
diff --git a/src/pretix/plugins/pretixdroid/__init__.py b/src/pretix/plugins/pretixdroid/__init__.py
index a3073b114..053e46cb3 100644
--- a/src/pretix/plugins/pretixdroid/__init__.py
+++ b/src/pretix/plugins/pretixdroid/__init__.py
@@ -1,6 +1,7 @@
 from django.apps import AppConfig
 from django.utils.translation import ugettext_lazy as _
 
+from pretix import __version__ as version
 from pretix.base.plugins import PluginType
 
 
@@ -12,7 +13,7 @@ class PretixdroidApp(AppConfig):
         type = PluginType.ADMINFEATURE
         name = _("pretixdroid API")
         author = _("the pretix team")
-        version = '1.0.0'
+        version = version
         description = _("This plugin allows you to use the pretixdroid Android app for your event.")
 
     def ready(self):
diff --git a/src/pretix/plugins/sendmail/__init__.py b/src/pretix/plugins/sendmail/__init__.py
index c55b17481..fdaa222a1 100644
--- a/src/pretix/plugins/sendmail/__init__.py
+++ b/src/pretix/plugins/sendmail/__init__.py
@@ -1,6 +1,7 @@
 from django.apps import AppConfig
 from django.utils.translation import ugettext_lazy as _
 
+from pretix import __version__ as version
 from pretix.base.plugins import PluginType
 
 
@@ -12,7 +13,7 @@ class SendMailApp(AppConfig):
         type = PluginType.ADMINFEATURE
         name = _("Send out emails")
         author = _("the pretix team")
-        version = '1.0.0'
+        version = version
         description = _("This plugin allows you to send out emails " +
                         "to all your customers.")
 
diff --git a/src/pretix/plugins/statistics/__init__.py b/src/pretix/plugins/statistics/__init__.py
index 765604b83..902f92253 100644
--- a/src/pretix/plugins/statistics/__init__.py
+++ b/src/pretix/plugins/statistics/__init__.py
@@ -1,6 +1,7 @@
 from django.apps import AppConfig
 from django.utils.translation import ugettext_lazy as _
 
+from pretix import __version__ as version
 from pretix.base.plugins import PluginType
 
 
@@ -12,7 +13,7 @@ class StatisticsApp(AppConfig):
         type = PluginType.ADMINFEATURE
         name = _("Statistics")
         author = _("the pretix team")
-        version = '1.0.0'
+        version = version
         description = _("This plugin shows you various statistics.")
 
     def ready(self):
diff --git a/src/pretix/plugins/stripe/__init__.py b/src/pretix/plugins/stripe/__init__.py
index 5f8ba1cc0..845831f49 100644
--- a/src/pretix/plugins/stripe/__init__.py
+++ b/src/pretix/plugins/stripe/__init__.py
@@ -2,6 +2,7 @@ from django.apps import AppConfig
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext_lazy as _
 
+from pretix import __version__ as version
 from pretix.base.plugins import PluginType
 
 
@@ -13,7 +14,7 @@ class StripeApp(AppConfig):
         type = PluginType.PAYMENT
         name = _("Stripe")
         author = _("the pretix team")
-        version = '1.0.0'
+        version = version
         description = _("This plugin allows you to receive credit card payments " +
                         "via Stripe")
 
diff --git a/src/pretix/plugins/ticketoutputpdf/__init__.py b/src/pretix/plugins/ticketoutputpdf/__init__.py
index c0cf5c3c2..c72e78435 100644
--- a/src/pretix/plugins/ticketoutputpdf/__init__.py
+++ b/src/pretix/plugins/ticketoutputpdf/__init__.py
@@ -2,6 +2,7 @@ from django.apps import AppConfig
 from django.utils.functional import cached_property
 from django.utils.translation import ugettext_lazy as _
 
+from pretix import __version__ as version
 from pretix.base.plugins import PluginType
 
 
@@ -13,7 +14,7 @@ class TicketOutputPdfApp(AppConfig):
         type = PluginType.PAYMENT
         name = _("PDF ticket output")
         author = _("the pretix team")
-        version = '1.0.0'
+        version = version
         description = _("This plugin allows you to print out tickets as PDF files")
 
     def ready(self):
diff --git a/src/pretix/plugins/timerestriction/__init__.py b/src/pretix/plugins/timerestriction/__init__.py
index e78bb750f..91f12c91c 100644
--- a/src/pretix/plugins/timerestriction/__init__.py
+++ b/src/pretix/plugins/timerestriction/__init__.py
@@ -1,6 +1,7 @@
 from django.apps import AppConfig
 from django.utils.translation import ugettext_lazy as _
 
+from pretix import __version__ as version
 from pretix.base.plugins import PluginType
 
 
@@ -12,7 +13,7 @@ class TimeRestrictionApp(AppConfig):
         type = PluginType.RESTRICTION
         name = _("Restriction by time")
         author = _("the pretix team")
-        version = '1.0.0'
+        version = version
         description = _("This plugin adds the possibility to restrict the sale " +
                         "of a given product or variation to a certain timeframe " +
                         "or change its price during a certain period.")
diff --git a/src/tests/plugins/banktransfer/test_import.py b/src/tests/plugins/banktransfer/test_import.py
index 52b69054b..a4fd78d73 100644
--- a/src/tests/plugins/banktransfer/test_import.py
+++ b/src/tests/plugins/banktransfer/test_import.py
@@ -1,10 +1,13 @@
 from datetime import timedelta
 
+import pytest
 from bs4 import BeautifulSoup
 from django.core.files.uploadedfile import SimpleUploadedFile
-import pytest
 from django.utils.timezone import now
-from pretix.base.models import Event, EventPermission, Order, Organizer, User, OrderPosition, Quota, Item
+
+from pretix.base.models import (
+    Event, EventPermission, Item, Order, OrderPosition, Organizer, Quota, User,
+)
 
 
 @pytest.fixture