diff --git a/bitly_api/bitly_api.py b/bitly_api/bitly_api.py
index 2a85522..4cb4f4e 100644
--- a/bitly_api/bitly_api.py
+++ b/bitly_api/bitly_api.py
@@ -714,6 +714,16 @@ def search(self, query, offset=None, cities=None, domain=None, fields=None,
         data = self._call_oauth2_metrics("v3/search", params, limit=limit)
         return data['results']
 
+    def custom_keyword(self, keyword_link, target_link, overwrite=False):
+        """ Save a Custom Bitlink for a custom short domain.
+        @parameter keyword_link: the Custom Bitlink (short domain and keyword combination) to set
+        @parameter target_link: the Bitlink the specified keyword will map to (as returned from /v3/shorten)
+        @parameter overwrite: Optional. true|false. Overwrite existing entry if one exists. Default: false.
+        """
+        params = dict(keyword_link=keyword_link, target_link=target_link, overwrite=overwrite)
+        data = self._call(self.host, 'v3/user/save_custom_domain_keyword', params, self.secret)
+        return data['data']
+
     @classmethod
     def _generateSignature(self, params, secret):
         if not params or not secret:
diff --git a/test/test_bitly_api.py b/test/test_bitly_api.py
index 18f7bfd..00fb7cf 100644
--- a/test/test_bitly_api.py
+++ b/test/test_bitly_api.py
@@ -8,6 +8,8 @@
 """
 import os
 import sys
+import random
+import string
 sys.path.append('../')
 import bitly_api
 
@@ -69,3 +71,16 @@ def testUserInfo():
     data = bitly.user_info()
     assert data is not None
     assert 'login' in data
+
+def testCustomKeyword():
+    bitly = get_connection()
+    data = bitly.shorten('http://google.com/')
+    short_url = data.get("url")
+
+    random_string = ''.join(random.SystemRandom().choice(string.ascii_uppercase + string.digits) for _ in range(6))
+    custom_url = 'http://bit.ly/Custom%s' % random_string
+
+    new_data = bitly.custom_keyword(custom_url, short_url)
+    assert new_data is not None
+    assert new_data['target_link'] == 'http://google.com/'
+    assert new_data['keyword_link'] == custom_url
\ No newline at end of file