diff --git a/addon.xml b/addon.xml
index 76fa84c..bf4a585 100644
--- a/addon.xml
+++ b/addon.xml
@@ -5,7 +5,7 @@
     <import addon="xbmc.python" version="3.0.0"/>
     <import addon="script.module.dateutil" version="2.8.0" />
     <import addon="script.module.future" version="0.18.2+matrix.1" />
-    <import addon="script.module.dropbox" version="9.4.0" />
+    <import addon="script.module.dropbox" version="10.3.1" />
     <import addon="script.module.pyqrcode" version="1.2.1+matrix.1" />
   </requires>
   <extension point="xbmc.python.script" library="default.py">
diff --git a/resources/lib/authorizers.py b/resources/lib/authorizers.py
index 3923be9..8504e65 100644
--- a/resources/lib/authorizers.py
+++ b/resources/lib/authorizers.py
@@ -1,8 +1,10 @@
 import xbmcgui
 import xbmcvfs
+import json
 import pyqrcode
 import resources.lib.tinyurl as tinyurl
 import resources.lib.utils as utils
+from datetime import datetime
 
 # don't die on import error yet, these might not even get used
 try:
@@ -37,6 +39,7 @@ class QRCode(xbmcgui.WindowXMLDialog):
 
 
 class DropboxAuthorizer:
+    TOKEN_FILE = "tokens.json"
     APP_KEY = ""
     APP_SECRET = ""
 
@@ -58,7 +61,7 @@ class DropboxAuthorizer:
     def isAuthorized(self):
         user_token = self._getToken()
 
-        return user_token != ''
+        return 'access_token' in user_token
 
     def authorize(self):
         result = True
@@ -71,7 +74,7 @@ class DropboxAuthorizer:
             self._deleteToken()
 
         # copied flow from http://dropbox-sdk-python.readthedocs.io/en/latest/moduledoc.html#dropbox.oauth.DropboxOAuth2FlowNoRedirect
-        flow = oauth.DropboxOAuth2FlowNoRedirect(self.APP_KEY, self.APP_SECRET)
+        flow = oauth.DropboxOAuth2FlowNoRedirect(consumer_key=self.APP_KEY, consumer_secret=self.APP_SECRET, token_access_type="offline")
 
         url = flow.start()
 
@@ -99,7 +102,7 @@ class DropboxAuthorizer:
 
         try:
             user_token = flow.finish(code)
-            self._setToken(user_token.access_token)
+            self._setToken(user_token)
         except Exception as e:
             utils.log("Error: %s" % (e,))
             result = False
@@ -114,8 +117,8 @@ class DropboxAuthorizer:
 
         if(user_token != ''):
             # create the client
-            result = dropbox.Dropbox(user_token)
-
+            result = dropbox.Dropbox(oauth2_access_token=user_token['access_token'], oauth2_refresh_token=user_token['refresh_token'],
+                                     oauth2_access_token_expiration=user_token['expiration'], app_key=self.APP_KEY, app_secret=self.APP_SECRET)
             try:
                 result.users_get_current_account()
             except:
@@ -127,21 +130,27 @@ class DropboxAuthorizer:
 
     def _setToken(self, token):
         # write the token files
-        token_file = open(xbmcvfs.translatePath(utils.data_dir() + "tokens.txt"), 'w')
-        token_file.write(token)
+        token_file = open(xbmcvfs.translatePath(utils.data_dir() + self.TOKEN_FILE), 'w')
+
+        token_file.write(json.dumps({"access_token": token.access_token, "refresh_token": token.refresh_token, "expiration": str(token.expires_at)}))
         token_file.close()
 
     def _getToken(self):
+        result = {}
         # get token, if it exists
-        if(xbmcvfs.exists(xbmcvfs.translatePath(utils.data_dir() + "tokens.txt"))):
-            token_file = open(xbmcvfs.translatePath(utils.data_dir() + "tokens.txt"))
+        if(xbmcvfs.exists(xbmcvfs.translatePath(utils.data_dir() + self.TOKEN_FILE))):
+            token_file = open(xbmcvfs.translatePath(utils.data_dir() + self.TOKEN_FILE))
             token = token_file.read()
+
+            if(token.strip() != ""):
+                result = json.loads(token)
+                # convert expiration back to a datetime object
+                result['expiration'] = datetime.strptime(result['expiration'], "%Y-%m-%d %H:%M:%S.%f")
+
             token_file.close()
 
-            return token
-        else:
-            return ""
+        return result
 
     def _deleteToken(self):
-        if(xbmcvfs.exists(xbmcvfs.translatePath(utils.data_dir() + "tokens.txt"))):
-            xbmcvfs.delete(xbmcvfs.translatePath(utils.data_dir() + "tokens.txt"))
+        if(xbmcvfs.exists(xbmcvfs.translatePath(utils.data_dir() + self.TOKEN_FILE))):
+            xbmcvfs.delete(xbmcvfs.translatePath(utils.data_dir() + self.TOKEN_FILE))