diff --git a/ago.py b/ago.py
index b7acec4..bf876b1 100644
--- a/ago.py
+++ b/ago.py
@@ -3,7 +3,7 @@ from datetime import (
   timedelta,
 )
 
-units = ('year', 'day', 'hour', 'minute', 'second', 'microsecond')
+units = ('year', 'day', 'hour', 'minute', 'second', 'millisecond', 'microsecond')
 
 def get_delta_from_subject(subject):
     subject_type = type(subject)
@@ -28,7 +28,8 @@ def delta2dict(delta):
         'hour'   : int(delta.seconds / 3600),
         'minute' : int(delta.seconds / 60) % 60,
         'second' : delta.seconds % 60,
-        'microsecond' : delta.microseconds
+        'millisecond' : delta.microseconds/1000,
+        'microsecond' : delta.microseconds%1000,
     }
 
 def human(subject, precision=2, past_tense='{} ago', future_tense='in {}', abbreviate=False):
@@ -56,7 +57,12 @@ def human(subject, precision=2, past_tense='{} ago', future_tense='in {}', abbre
         if count >= precision: break # met precision
         if d[ unit ] == 0: continue # skip 0's
         if abbreviate:
-            abr = 'mu' if unit == 'microsecond' else unit[0]
+            if unit == 'millisecond':
+                abr = 'ms'
+            elif unit == 'microsecond':
+                abr = 'um'
+            else:
+                abr = unit[0]
             hlist.append('{}{}'.format(d[unit], abr))
         else:
             s = '' if d[ unit ] == 1 else 's' # handle plurals
diff --git a/setup.py b/setup.py
index 3479c47..33ae75d 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@ from setuptools import setup
 
 setup( 
     name = 'ago',
-    version = '0.0.91',
+    version = '0.0.92',
     description = 'ago: Human readable timedeltas',
     keywords = 'ago human readable time deltas timedelta datetime timestamp',
     long_description = open('README.rst').read(),
diff --git a/test_ago.py b/test_ago.py
index 859a409..a9620c0 100644
--- a/test_ago.py
+++ b/test_ago.py
@@ -8,8 +8,8 @@ from ago import delta2dict
 
 # datetime objects
 PRESENT = datetime.now()
-PAST    = PRESENT - timedelta( 492, 58711, 45 ) # days, secs, ms
-FUTURE  = PRESENT + timedelta( 2, 12447, 963 ) # days, secs, ms
+PAST    = PRESENT - timedelta( 492, 58711, 45 ) # days, secs, microseconds
+FUTURE  = PRESENT + timedelta( 2, 12447, 967742 ) # days, secs, microseconds
 
 # timedelta objects
 PAST_DELTA   = PRESENT - PAST
@@ -101,7 +101,8 @@ def test_valid_future_dict():
     assert past_dict['day'] == 2
     assert past_dict['hour'] == 3
     assert past_dict['minute'] == 27
-    assert past_dict['microsecond'] == 963
+    assert past_dict['millisecond'] == 967
+    assert past_dict['microsecond'] == 742
 
 def example_usage():
     """Test and example usage"""