diff --git a/CHANGES.rst b/CHANGES.rst
index c3afa14f..1d18f95e 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,4 +1,9 @@
 
+Revision 0.3.7, released XX-09-2017
+-----------------------------------
+
+- Fixed ASN.1 time types pickling/deepcopy'ing
+
 Revision 0.3.6, released 21-09-2017
 -----------------------------------
 
diff --git a/pyasn1/__init__.py b/pyasn1/__init__.py
index e7720b47..c9218a04 100644
--- a/pyasn1/__init__.py
+++ b/pyasn1/__init__.py
@@ -1,7 +1,7 @@
 import sys
 
 # http://www.python.org/dev/peps/pep-0396/
-__version__ = '0.3.6'
+__version__ = '0.3.7'
 
 if sys.version_info[:2] < (2, 4):
     raise RuntimeError('PyASN1 requires Python 2.4 or later')
diff --git a/pyasn1/type/useful.py b/pyasn1/type/useful.py
index 1338e6ae..a05a9a60 100644
--- a/pyasn1/type/useful.py
+++ b/pyasn1/type/useful.py
@@ -37,7 +37,9 @@ class TimeMixIn(object):
     class FixedOffset(datetime.tzinfo):
         """Fixed offset in minutes east from UTC."""
 
-        def __init__(self, offset, name):
+        # defaulted arguments required
+        # https: // docs.python.org / 2.3 / lib / datetime - tzinfo.html
+        def __init__(self, offset=0, name='UTC'):
             self.__offset = datetime.timedelta(minutes=offset)
             self.__name = name
 
@@ -50,7 +52,7 @@ def tzname(self, dt):
         def dst(self, dt):
             return datetime.timedelta(0)
 
-    UTC = FixedOffset(0, 'UTC')
+    UTC = FixedOffset()
 
     @property
     def asDateTime(self):
diff --git a/tests/type/test_useful.py b/tests/type/test_useful.py
index 717eede6..82a97d7e 100644
--- a/tests/type/test_useful.py
+++ b/tests/type/test_useful.py
@@ -6,6 +6,7 @@
 #
 import sys
 import datetime
+from copy import deepcopy
 
 try:
     import unittest2 as unittest
@@ -72,6 +73,10 @@ def testToDateTime7(self):
     def testToDateTime8(self):
         assert datetime.datetime(2017, 7, 11, 0) == useful.GeneralizedTime('2017071100').asDateTime
 
+    def testCopy(self):
+        dt = useful.GeneralizedTime("20170916234254+0130").asDateTime
+        assert dt == deepcopy(dt)
+
 
 class UTCTimeTestCase(BaseTestCase):