diff --git a/readability/auth.py b/readability/auth.py
index 01e4a2d..124088e 100644
--- a/readability/auth.py
+++ b/readability/auth.py
@@ -45,10 +45,10 @@ def xauth(base_url_template=DEFAULT_READER_URL_TEMPLATE, **xargs):
     :param password: A password, otherwise read from READABILITY_PASSWORD.
 
     """
-    consumer_key = xargs.get('consumer_key', required_from_env('READABILITY_CONSUMER_KEY'))
-    consumer_secret = xargs.get('consumer_secret', required_from_env('READABILITY_CONSUMER_SECRET'))
-    username = xargs.get('username', required_from_env('READABILITY_USERNAME'))
-    password = xargs.get('password', required_from_env('READABILITY_PASSWORD'))
+    consumer_key = xargs.get('consumer_key') or required_from_env('READABILITY_CONSUMER_KEY')
+    consumer_secret = xargs.get('consumer_secret') or required_from_env('READABILITY_CONSUMER_SECRET')
+    username = xargs.get('username') or required_from_env('READABILITY_USERNAME')
+    password = xargs.get('password') or required_from_env('READABILITY_PASSWORD')
 
     client = Client(consumer_key, client_secret=consumer_secret, signature_type='BODY')
     url = base_url_template.format(ACCESS_TOKEN_URL)
diff --git a/setup.py b/setup.py
old mode 100755
new mode 100644
index 8c67402..17ea32c
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@
     'pytest',
     'requests',
     'requests_oauthlib',
-    'httplib2==0.9.1',
+    'httplib2==0.19.0',
     'python-dateutil',
 ]
 
@@ -20,7 +20,7 @@
 
 setup(
     name='readability-api',
-    version='1.0.1',
+    version='1.0.2',
     description='Python client for the Readability Reader and Parser APIs.',
     long_description=open('README.rst').read(),
     author='The Readability Team',