diff --git a/docs/source/python-server-api-examples.md b/docs/source/python-server-api-examples.md
index cfb313ef..25fc5b19 100644
--- a/docs/source/python-server-api-examples.md
+++ b/docs/source/python-server-api-examples.md
@@ -40,8 +40,10 @@ At a high level, a "digital asset" is something which can be represented digital
 In BigchainDB, only the federation nodes are allowed to create digital assets, by doing a special kind of transaction: a `CREATE` transaction.
 
 ```python
+from bigchaindb import crypto
+
 # create a test user
-testuser1_priv, testuser1_pub = b.generate_keys()
+testuser1_priv, testuser1_pub = crypto.generate_key_pair()
 
 # define a digital asset data payload
 digital_asset_payload = {'msg': 'Hello BigchainDB!'}
diff --git a/setup.py b/setup.py
index 6156b417..26670814 100644
--- a/setup.py
+++ b/setup.py
@@ -71,7 +71,7 @@ setup(
         'rethinkdb==2.2.0.post4',
         'pysha3==0.3',
         'pytz==2015.7',
-        'cryptography==1.2.1',
+        'cryptography==1.2.3',
         'statsd==3.2.1',
         'python-rapidjson==0.0.6',
         'logstats==0.2.1',