diff --git a/connect.py b/connect.py
index 58614c6..7e23d50 100644
--- a/connect.py
+++ b/connect.py
@@ -1,8 +1,7 @@
 import httplib2
 from oauth2client.file import Storage
-
+from oauth2client.client import SignedJwtAssertionCredentials
 from django.conf import settings
-
 from apiclient.discovery import build
 
 class Connection(object):
@@ -13,14 +12,16 @@ def get_service(self):
             return self.service
 
         else:
+            http = httplib2.Http()
             storage = Storage(settings.GCALSYNC_CREDENTIALS)
-
             credentials = storage.get()
+            if credentials is None or credentials.invalid == True:
+                    credentials = SignedJwtAssertionCredentials(settings.GCALSYNC_CREDENTIALS_EMAIL, settings.GCALSYNC_CREDENTIALS_KEY, scope="https://www.googleapis.com/auth/calendar")
+                    storage.put(credentials)
+            else:
+                credentials.refresh(http)
 
-            http = httplib2.Http()
             http = credentials.authorize(http)
 
-            self.service = build(serviceName='calendar', version='v3', http=http,
-                 developerKey=settings.GCALSYNC_APIKEY)
-
-            return self.service
\ No newline at end of file
+            self.service =  build("calendar", "v3", http=http)
+            return self.service