diff --git a/README.rst b/README.rst
index 4e975c3..c8b65d8 100644
--- a/README.rst
+++ b/README.rst
@@ -544,12 +544,16 @@ Create Scoped Keys (**Deprecated**)
 ''''''''''''''''''
 
 The Python client enables you to create `Scoped Keys <https://keen.io/docs/security/#scoped-key>`_ easily, but Access Keys are better! 
-If you need to use them anyway, for legacy reasons, here's how:
+If you need to use them anyway, here's how:
+
+::
+
+    pip install pycryptodome
 
 .. code-block:: python
 
     from keen.client import KeenClient
-    from keen import scoped_keys
+    from keen import scoped_keys # You must have pycryptodome installed!
 
     api_key = KEEN_MASTER_KEY
 
diff --git a/keen/scoped_keys.py b/keen/scoped_keys.py
index 30794ec..28ea07a 100644
--- a/keen/scoped_keys.py
+++ b/keen/scoped_keys.py
@@ -2,8 +2,15 @@
 import json
 import os
 import six
-from Crypto.Cipher import AES
 
+try:
+    from Crypto.Cipher import AES
+except ImportError as ie:
+    ie.args = (ie.args[0] + ' -- Scoped Keys are deprecated in favor'
+               ' of Access Keys. To use Scoped Keys anyway, run: '
+               '`pip install pycryptodome` and try this again.',)
+    raise ie
+ 
 from keen import Padding
 
 __author__ = 'dkador'
diff --git a/requirements.txt b/requirements.txt
index 8224fb4..eeb0912 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,2 @@
-pycryptodome>=3.4
 requests>=2.5,<3.0
 six~=1.10.0
diff --git a/setup.py b/setup.py
index 5b560c9..27afdb3 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@
 reqs = reqs_file.readlines()
 reqs_file.close()
 
-tests_require = ['nose', 'mock', 'responses==0.5.1', 'unittest2']
+tests_require = ['nose', 'mock', 'responses==0.5.1', 'unittest2', 'pycryptodome>=3.4']
 
 setup(
     name="keen",