diff --git a/.travis.yml b/.travis.yml
index aa406ae..d642cc1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: python
 python:
-  - "2.7"
+  - "3.6"
 # command to install dependencies
 install:
   - python setup.py install
diff --git a/setup.py b/setup.py
index e842eb5..f0ae929 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 
 setup(
     name             = 'Python-Spoke',
-    version          = '1.0.10',
+    version          = '1.0.31',
     packages         = find_packages(),
     description      = 'API bindings for Spoke API',
     long_description = open(os.path.join(os.path.dirname(__file__), 'README.md'), 'r').read(),
@@ -12,6 +12,6 @@
     author_email     = 'rob.hoelz@skinnycorp.com',
     url              = 'https://github.com/Threadless/python-spoke',
     keywords         = 'spoke',
-    install_requires = ['lxml==3.3.5', 'requests==2.2.1'],
-    tests_require    = ['nose==1.3.1', 'python-termstyle==0.1.10', 'rednose==0.4.1'],
+    install_requires = ['lxml==4.9.3', 'requests==2.27.0'],
+    tests_require    = ['nose==1.3.7', 'rednose==1.3.0'],
 )
diff --git a/spoke/__init__.py b/spoke/__init__.py
index d16d57a..68fe70e 100644
--- a/spoke/__init__.py
+++ b/spoke/__init__.py
@@ -7,8 +7,9 @@
 
 from lxml import etree
 import requests
+import six
 
-__version__ = '1.0.11'
+__version__ = '1.0.31'
 
 __all__ = ['Case', 'Comment', 'Image', 'OrderInfo', 'PackSlipCustomInfo', 'Spoke', 'ValidationError', 'SpokeError']
 
@@ -296,16 +297,72 @@ def __init__(self, **kwargs):
         '''
         _validate(kwargs,
             CaseId         = Required(),
-            CaseType       = Required(Enum('iph4bt', 'iph4tough', 'iph4tough2', 'iph3bt',
-                'iph3tough', 'ipt4gbt', 'bb9900bt', 'kindlefirebt', 'ssgs3vibe',
-                'iph5bt', 'iph5vibe', 'iph5cbt', 'iph5xtreme', 'iph6bt',
-                'iph6tough', 'iph655bt', 'iph655tough', 'ipad4bt', 'ipadminitough',
-                'ipt5gbt', 'ssgn2tough', 'bbz10tough', 'ssgs4bt', 'ssgs4vibe',
-                'ssgs5bt', 'ssgn4bt', 'ssgs6vibe', 'ssgs6bt', 'ssgs7bt', 'iph6sbtpresale',
-                'iph6stoughpresale', 'iph6splusbtpresale', 'iph6splustoughpresale',
-                'iph7bt', 'iph7tough', 'iph7plusbt', 'iph7plustough',
-                'mug11oz', 'mug15oz', 'mug12ozlatte', 'mug15oztravel', 'journal5x7blank',
-                'journal5x7ruled', 'spiral6x8ruled', 'ssgs8bt', 'iph8bt', 'iph8tough')),
+            CaseType       = Required(Enum(
+                'bb9900bt', 'bbz10tough', 'kindlefirebt',
+                # apple / iphone
+                'iph3bt', 'iph3tough', 'iph4bt', 'iph4tough', 'iph4tough2', 
+                'ipt4gbt',  'iph5bt', 'iph5vibe', 'iph5cbt', 'ipt5gbt', 
+                'iph5xtreme', 'iph6bt', 'iph6tough', 'iph655bt', 'iph655tough',
+                'ipad4bt', 'ipadminitough', 'iph6sbtpresale', 
+                'iph6stoughpresale', 'iph6splusbtpresale', 
+                'iph6splustoughpresale', 'iph7bt', 'iph7tough', 'iph7plusbt',
+                'iph7plustough', 'iph8bt', 'iph8tough', 'iph10bt', 
+                'iph10tough', 'iphxsmaxbt', 'iphxsmaxtough', 'iphxrbt', 
+                'iphxrtough', 'iph11bt', 'iph11tough', 'iph11probt', 
+                'iph11protough', 'iph11promaxbt', 'iph11promaxtough',
+                'iph12minibt', 'iph12minitough', 'iph12probt',
+                'iph12protough', 'iph12promaxbt', 'iph12promaxtough',
+                'iph13bt', 'iph13tough', 'iph13minibt', 'iph13minitough',
+                'iph13probt', 'iph13protough', 'iph13promaxbt', 'iph13promaxtough',
+                'iph14snapps', 'iph14prosnapps', 'iph14plussnapps', 'iph14promaxsnapps',
+                'iph14toughps', 'iph14protoughps', 'iph14plustoughps', 'iph14promaxtoughps',
+                'SP10599', # iphone 15 slim
+                'SP10603', # iphone 15 tough
+                'SP10601', # iphone 15 plus slim
+                'SP10605', # iphone 15 plus tough
+                'SP10600', # iphone 15 pro slim
+                'SP10604', # iphone 15 pro tough
+                'SP10602', # iphone 15 pro max slim
+                'SP10606', # iphone 15 pro max tough
+                'SP10625', # iphone 16 slim
+                'SP10629', # iphone 16 tough
+                'SP10627', # iphone 16 plus slim
+                'SP10631', # iphone 16 plus tough
+                'SP10626', # iphone 16 pro slim
+                'SP10630', # iphone 16 pro tough
+                'SP10628', # iphone 16 pro max slim
+                'SP10632', # iphone 16 pro max tough
+                'SP10803', # iphone 17 slim
+                'SP10815', # iphone 17 tough
+                'SP10812', # iphone 17 pro slim
+                'SP10824', # iphone 17 pro tough
+                'SP10809', # iphone 17 pro max slim
+                'SP10821', # iphone 17 pro max tough
+                'SP10806', # iphone 17 air slim
+                'SP10818', # iphone 17 air tough
+                # buttons
+                'button-round-125', 'button-round-225',
+                # samsung / galaxy
+                'ssgn2tough', 'ssgs3vibe', 'ssgs4bt', 'ssgs4vibe',
+                'ssgs5bt', 'ssgn4bt', 'ssgs6vibe', 'ssgs6bt', 'ssgs7bt', 'ssgs8bt',
+                # magnets
+                '3x3-magnet', '4x4-magnet', '6x6-magnet',
+                # mugs
+                'mug11oz', 'mug15oz', 'mug12ozlatte', 'mug15oztravel', 
+                # notebooks
+                'journal5x7blank', 'journal5x7ruled', 'spiral6x8ruled',  
+                # stickers
+                '2x2-white', '3x3-white', '4x4-white', '6x6-white',
+                '2x2-clear', '3x3-clear', '4x4-clear', '6x6-clear',
+                # socks
+                'sock-small', 'sock-medium', 'sock-large',
+                # face masks
+                'facemasksmall', 'facemasklarge',
+                # puzzles
+                '8x10-puzzle', '11x14-puzzle', '16x20-puzzle',
+                # mouse pad / desk mat
+                '9x7mousepad', 'smallmat', 'largemat', 'xlargemat',
+                )),
             Quantity       = Required(),
             PrintImage     = Required(Image),
             QcImage        = Optional(Image),
@@ -409,7 +466,7 @@ def _generate_tree(self, tag_name, serializers, node):
         else:
             element = etree.Element(tag_name)
 
-            if not isinstance(node, basestring):
+            if not isinstance(node, str):
                 node = str(node)
             element.text = node
 
@@ -434,11 +491,11 @@ def serialize_it(tag_name, value):
             Key         = self.Key,
             Order       = Order,
         ))
-        return etree.tostring(request, pretty_print=True)
+        return etree.tostring(request, encoding='utf-8', pretty_print=True)
 
     def _send_request(self, request):
         res    = self.transport.send(request)
-        tree   = etree.fromstring(res)
+        tree   = etree.fromstring(res.decode('utf-8'))
         result = tree.xpath('//result')[0].text
 
         if result == 'Success':