diff --git a/tap_fleetio/client.py b/tap_fleetio/client.py
index 87a1b04..2e5dcbc 100644
--- a/tap_fleetio/client.py
+++ b/tap_fleetio/client.py
@@ -54,6 +54,7 @@ def http_headers(self) -> dict:
             headers["User-Agent"] = self.config.get("user_agent")
         headers["Authorization"] = f"Token {self.config.get('api_token')}"
         headers["Account-Token"] = self.config.get('account_token')
+        headers["request_source"] = "fleetio_singer_tap"
         return headers
 
     def get_new_paginator(self):