diff --git a/src/EagleEyev3/__init__.py b/src/EagleEyev3/__init__.py
index eebabe2..f0eb2d1 100644
--- a/src/EagleEyev3/__init__.py
+++ b/src/EagleEyev3/__init__.py
@@ -1,5 +1,5 @@
 """ Python client for Eagle Eye Networks APIv3 """
-version = "0.0.20"
+version = "0.0.21"
 __version__ = version
 
 
@@ -127,8 +127,7 @@ class EagleEyev3():
         else:
             return (ts - timedelta(hours=hours)).isoformat(timespec='milliseconds')
 
-
-    def login_tokens(self, code=None, cascade=True):
+    def login_tokens(self, code=None, cascade=True, refresh_token=None):
         """
         Obtains login tokens using the authorization code.
 
@@ -140,7 +139,11 @@ class EagleEyev3():
             dict: Dictionary containing the success status, response HTTP status code, data, and current user information.
         """
         baseUrl = "https://auth.eagleeyenetworks.com/oauth2/token"
-        pathUrl = f"?grant_type=authorization_code&scope=vms.all&code={code}&redirect_uri={self.redirect_uri}" # Note the trailing slash, make sure it matches the whitelist
+        if refresh_token:
+            pathUrl = f"?grant_type=refresh_token&refresh_token={refresh_token}"
+        else:
+            pathUrl = f"?grant_type=authorization_code&scope=vms.all&code={code}&redirect_uri={self.redirect_uri}" # Note the trailing slash, make sure it matches the whitelist
+        
         url = baseUrl + pathUrl
 
         # Send a POST request to obtain login tokens