diff --git a/src/monitor_utils/runner.py b/src/monitor_utils/runner.py
index 2affe1c..106584e 100644
--- a/src/monitor_utils/runner.py
+++ b/src/monitor_utils/runner.py
@@ -344,6 +344,7 @@ async def run_bounded_cycle(
     proxies: AioProxies,
     collection: AsyncIOMotorCollection,
     *,
+    headers: dict | None = None,
     session_timeout: int = TIMEOUT_SECONDS,
     max_clients: int = MAX_CURL_HANDLES,
     cycle_timeout: int = CYCLE_TIMEOUT_SECONDS,
@@ -369,6 +370,7 @@ async def run_bounded_cycle(
         task_func: Awaitable invoked per category.
         proxies: Pool bound to each cycle's fresh session.
         collection: Mongo collection forwarded to every callback.
+        headers: Monitor-wide static headers merged into every request.
         session_timeout: Per-request timeout on the cycle's session.
         max_clients: Curl handle pool size. Keep at or above the monitor's
             whole fan-out; see get_default_session for why.
@@ -382,7 +384,7 @@ async def run_bounded_cycle(
     """
 
     async with get_default_session(
-        proxies, timeout=session_timeout, max_clients=max_clients
+        proxies, headers, timeout=session_timeout, max_clients=max_clients
     ) as session:
         try:
             async with asyncio.timeout(cycle_timeout):
diff --git a/tests/test_run_bounded_cycle.py b/tests/test_run_bounded_cycle.py
index 833bd9a..90d7679 100644
--- a/tests/test_run_bounded_cycle.py
+++ b/tests/test_run_bounded_cycle.py
@@ -35,10 +35,15 @@ def stub_session(monkeypatch) -> dict:
     """Fake get_default_session, recording each call's kwargs and session."""
     calls = []
 
-    def fake(proxies, timeout=None, max_clients=None):
+    def fake(proxies, headers=None, timeout=None, max_clients=None):
         session = FakeSession()
         calls.append(
-            {"timeout": timeout, "max_clients": max_clients, "session": session}
+            {
+                "headers": headers,
+                "timeout": timeout,
+                "max_clients": max_clients,
+                "session": session,
+            }
         )
         return session
 
@@ -66,10 +71,17 @@ def test_session_params_reach_the_factory(monkeypatch):
 
     asyncio.run(
         run_bounded_cycle(
-            ["a"], task, None, None, session_timeout=8, max_clients=81
+            ["a"],
+            task,
+            None,
+            None,
+            headers={"referer": "https://x/"},
+            session_timeout=8,
+            max_clients=81,
         )
     )
 
+    assert calls[0]["headers"] == {"referer": "https://x/"}
     assert calls[0]["timeout"] == 8
     assert calls[0]["max_clients"] == 81