diff --git a/test_files/simple_2_0_test.ics b/test_files/simple_2_0_test.ics
index 9e50610..badd055 100644
--- a/test_files/simple_2_0_test.ics
+++ b/test_files/simple_2_0_test.ics
@@ -1,6 +1,6 @@
 BEGIN:VCALENDAR
 VERSION:2.0
-PRODID:-//PYVOBJECT//NONSGML Version 1//EN
+PRODID:-//PYVOBJECT//NONSGML Version %s//EN
 BEGIN:VEVENT
 UID:Not very random UID
 DTSTART:20060509T000000
diff --git a/tests.py b/tests.py
index 1991b9a..8b6deb4 100644
--- a/tests.py
+++ b/tests.py
@@ -12,7 +12,7 @@
 from dateutil.tz import tzutc
 from dateutil.rrule import rrule, rruleset, WEEKLY, MONTHLY
 
-from vobject import base, iCalendar
+from vobject import VERSION, base, iCalendar
 from vobject import icalendar
 
 from vobject.base import __behaviorRegistry as behavior_registry
@@ -56,7 +56,7 @@ def test_scratchbuild(self):
         """
         CreateCalendar 2.0 format from scratch
         """
-        test_cal = get_test_file("simple_2_0_test.ics")
+        test_cal = get_test_file("simple_2_0_test.ics") % VERSION
         cal = base.newFromBehavior('vcalendar', '2.0')
         cal.add('vevent')
         cal.vevent.add('dtstart').value = datetime.datetime(2006, 5, 9)
diff --git a/vobject/__init__.py b/vobject/__init__.py
index 6f5e28b..8a8f28d 100644
--- a/vobject/__init__.py
+++ b/vobject/__init__.py
@@ -76,12 +76,12 @@
 
 """
 
-from .base import newFromBehavior, readOne, readComponents
+from .base import VERSION, newFromBehavior, readOne, readComponents
 from . import icalendar, vcard
 
 
 # Package version
-__version__ = VERSION = "1.0.0"
+__version__ = VERSION
 
 
 def iCalendar():
diff --git a/vobject/base.py b/vobject/base.py
index 83239bd..93077ee 100644
--- a/vobject/base.py
+++ b/vobject/base.py
@@ -9,6 +9,10 @@
 import six
 import sys
 
+# Package version
+VERSION = "1.0.0"
+
+
 # ------------------------------------ Python 2/3 compatibility challenges  ----
 # Python 3 no longer has a basestring type, so....
 try:
diff --git a/vobject/icalendar.py b/vobject/icalendar.py
index e12f2dd..dcabafc 100644
--- a/vobject/icalendar.py
+++ b/vobject/icalendar.py
@@ -29,7 +29,7 @@ class NonExistentTimeError(Exception):
     pytz = Pytz  # keeps quantifiedcode happy
 
 from . import behavior
-from .base import (VObjectError, NativeError, ValidateError, ParseError,
+from .base import (VERSION, VObjectError, NativeError, ValidateError, ParseError,
                    Component, ContentLine, logger, registerBehavior,
                    backslashEscape, foldOneLine)
 
@@ -38,7 +38,7 @@ class NonExistentTimeError(Exception):
 DATENAMES = ("rdate", "exdate")
 RULENAMES = ("exrule", "rrule")
 DATESANDRULES = ("exrule", "rrule", "rdate", "exdate")
-PRODID = u"-//PYVOBJECT//NONSGML Version 1//EN"
+PRODID = u"-//PYVOBJECT//NONSGML Version %s//EN" % VERSION
 
 WEEKDAYS = "MO", "TU", "WE", "TH", "FR", "SA", "SU"
 FREQUENCIES = ('YEARLY', 'MONTHLY', 'WEEKLY', 'DAILY', 'HOURLY', 'MINUTELY',