diff --git a/deadlock_data_api/rate_limiter/models.py b/deadlock_data_api/rate_limiter/models.py
index c852d4e..a6e5c1c 100644
--- a/deadlock_data_api/rate_limiter/models.py
+++ b/deadlock_data_api/rate_limiter/models.py
@@ -33,6 +33,7 @@ def next_request_in(self) -> float:
     def headers(self) -> dict[str, str]:
         return {
             "RateLimit-Limit": str(self.limit),
+            "RateLimit-Period": str(self.period),
             "RateLimit-Remaining": str(self.remaining),
             "RateLimit-Reset": str(self.next_request_in),
             "Retry-After": str(self.next_request_in),