diff --git a/salt_observer/saltapis.py b/salt_observer/saltapis.py
index 540e5cdc39af4a635e1c47fccac42d3d7bfbd64c..cb1f47a94044422cc4c09e9dea76fb947cb92dad 100644
--- a/salt_observer/saltapis.py
+++ b/salt_observer/saltapis.py
@@ -24,7 +24,7 @@ class AbstractApi(object):
 
     def request(self, method='get', resource='/', headers={}, data={}, set_token_header=True):
         if set_token_header:
-            headers = {**headers, 'X-Auth-Token': self.token}
+            headers.update({'X-Auth-Token': self.token})
 
         return getattr(requests, method)(
             self.BASE_URL + resource,