--- a/docs/index.rst	
+++ a/docs/index.rst	
@@ -22,11 +22,6 @@ Welcome to keyrings.alt documentation!
     :undoc-members:
     :show-inheritance:
 
-.. automodule:: keyrings.alt.keyczar
-    :members:
-    :undoc-members:
-    :show-inheritance:
-
 .. automodule:: keyrings.alt.multi
     :members:
     :undoc-members:
--- a/keyrings/alt/Google.py	
+++ a/keyrings/alt/Google.py	
@@ -15,7 +15,6 @@ try:
 except ImportError:
     pass
 
-from . import keyczar
 from keyring import errors
 from keyring import credentials
 from keyring.backend import KeyringBackend
@@ -69,8 +68,6 @@ class DocsKeyring(KeyringBackend):
     def priority(cls):
         if not cls._has_gdata():
             raise RuntimeError("Requires gdata")
-        if not keyczar.has_keyczar():
-            raise RuntimeError("Requires keyczar")
         return 3
 
     @classmethod
@@ -297,27 +294,3 @@ class DocsKeyring(KeyringBackend):
                 result = self.FAIL
 
         return result
-
-class KeyczarDocsKeyring(DocsKeyring):
-    """Google Docs keyring using keyczar initialized from environment
-    variables
-    """
-
-    def __init__(self):
-        crypter = keyczar.EnvironCrypter()
-        credential = EnvironCredential()
-        source = os.environ.get('GOOGLE_KEYRING_SOURCE')
-        super(KeyczarDocsKeyring, self).__init__(
-            credential, source, crypter)
-
-    def supported(self):
-        """Return if this keyring supports current environment:
-        -1: not applicable
-         0: suitable
-         1: recommended
-        """
-        try:
-            from keyczar import keyczar
-            return super(KeyczarDocsKeyring, self).supported()
-        except ImportError:
-            return -1
--- a/keyrings/alt/file.py	
+++ a/keyrings/alt/file.py	
@@ -37,7 +37,7 @@ class PlaintextKeyring(Keyring):
 
 class Encrypted(object):
     """
-    PyCrypto-backed Encryption support
+    Pycryptodome-backed Encryption support
     """
     scheme = '[PBKDF2] AES256.CFB'
     version = '1.0'
@@ -68,7 +68,7 @@ class Encrypted(object):
 
 
 class EncryptedKeyring(Encrypted, Keyring):
-    """PyCrypto File Keyring"""
+    """Cryptodome File Keyring"""
 
     filename = 'crypted_pass.cfg'
     pw_prefix = 'pw:'.encode()
@@ -82,7 +82,7 @@ class EncryptedKeyring(Encrypted, Keyring):
             __import__('Crypto.Protocol.KDF')
             __import__('Crypto.Random')
         except ImportError:     # pragma: no cover
-            raise RuntimeError("PyCrypto required")
+            raise RuntimeError("Pycryptodome required")
         if not json:            # pragma: no cover
             raise RuntimeError("JSON implementation such as simplejson "
                 "required.")
--- a/keyrings/alt/pyfs.py	
+++ a/keyrings/alt/pyfs.py	
@@ -8,7 +8,6 @@ from keyring import errors
 from keyring.util.escape import escape as escape_for_ini
 from keyring.util import platform_, properties
 from keyring.backend import KeyringBackend, NullCrypter
-from . import keyczar
 
 try:
     import fs.opener
@@ -261,12 +260,3 @@ class EncryptedKeyring(BasicKeyring):
         super(EncryptedKeyring, self).__init__(
             crypter, filename=filename, can_create=can_create,
             cache_timeout=cache_timeout)
-
-class KeyczarKeyring(EncryptedKeyring):
-    """Encrypted Pyfilesystem Keyring using Keyczar keysets specified in
-    environment vars
-    """
-
-    def __init__(self):
-        super(KeyczarKeyring, self).__init__(
-            keyczar.EnvironCrypter())
--- a/setup.py	
+++ a/setup.py	
@@ -26,6 +26,7 @@ params = dict(
     python_requires='>=2.7',
     install_requires=[
         'six',
+        'pycryptodome'
     ],
     extras_require={
     },
@@ -44,7 +45,6 @@ params = dict(
             'file = keyrings.alt.file',
             'Gnome = keyrings.alt.Gnome',
             'Google = keyrings.alt.Google',
-            'keyczar = keyrings.alt.keyczar',
             'multi = keyrings.alt.multi',
             'pyfs = keyrings.alt.pyfs',
             'Windows (alt) = keyrings.alt.Windows',
--- a/tests/requirements.txt	
+++ a/tests/requirements.txt	
@@ -4,13 +4,8 @@ backports.unittest_mock
 keyring[test] >= 10.3.1
 
 fs>=0.5,<2
-pycrypto
+pycryptodome
 
 # gdata doesn't currently install on Python 3
 # http://code.google.com/p/gdata-python-client/issues/detail?id=229
 gdata; python_version=="2.7"
-
-
-# keyczar doesn't currently install on Python 3.
-# http://code.google.com/p/keyczar/issues/detail?id=125
-python-keyczar; python_version=="2.7"
--- a/tests/test_Google.py	
+++ a/tests/test_Google.py	
@@ -10,7 +10,7 @@ from keyrings.alt import Google
 from keyring.credentials import SimpleCredential
 from keyring.backend import NullCrypter
 from keyring import errors
-from . import mocks
+import mocks
 
 def is_gdata_supported():
     try:
@@ -58,7 +58,7 @@ class GoogleDocsKeyringInteractionTestCase(unittest.TestCase):
         listfeed = mocks.MockListFeed()
         listfeed._entry = [mocks.MockDocumentListEntry(),
                            mocks.MockDocumentListEntry()
-                          ]
+                           ]
         return listfeed
 
     def _encode_data(self, data):
--- a/tests/test_crypto.py	
+++ a/tests/test_crypto.py	
@@ -1,7 +1,7 @@ 
 import unittest
 from unittest import mock
 
-from .test_file import FileKeyringTests
+from test_file import FileKeyringTests
 
 from keyrings.alt import file