diff --git a/infoblox_client/connector.py b/infoblox_client/connector.py
index a54e3d2..dccf6d2 100644
--- a/infoblox_client/connector.py
+++ b/infoblox_client/connector.py
@@ -20,6 +20,7 @@
 import six
 import urllib3
 import time
+import base64
 from requests import exceptions as req_exc
 
 try:
@@ -196,8 +197,9 @@ def _configure_session(self):
         self.session.mount('http://', adapter)
         self.session.mount('https://', adapter)
         if hasattr(self, 'username') and hasattr(self, 'password'):
-            LOG.info("Authenticating with username and password.")
-            self.session.auth = (self.username, self.password)
+            auth_str = f"{self.username}:{self.password}"
+            encoded_auth = base64.b64encode(auth_str.encode('utf-8')).decode('utf-8')
+            self.session.headers.update({'Authorization': f'Basic {encoded_auth}'})
         else:
             self.session.cert = (self.cert, self.key)
             LOG.info("Authenticating with client certificate.")