diff --git a/app/notify_client/__init__.py b/app/notify_client/__init__.py
index f2f1e922d..e47930a09 100644
--- a/app/notify_client/__init__.py
+++ b/app/notify_client/__init__.py
@@ -38,6 +38,7 @@ class NotifyAdminAPIClient(BaseAPIClient):
         if not has_request_context():
             return headers
         headers['X-B3-TraceId'] = request.request_id
+        headers['X-B3-SpanId'] = request.span_id
         return headers
 
     def check_inactive_service(self):
diff --git a/tests/app/notify_client/test_notify_admin_api_client.py b/tests/app/notify_client/test_notify_admin_api_client.py
index 6b031a380..4082647b0 100644
--- a/tests/app/notify_client/test_notify_admin_api_client.py
+++ b/tests/app/notify_client/test_notify_admin_api_client.py
@@ -99,6 +99,7 @@ def test_generate_headers_sets_request_id_if_in_request_context(app_):
         headers = api_client.generate_headers('api_token')
 
     assert set(headers.keys()) == {
-        'Authorization', 'Content-type', 'User-agent', 'X-Custom-Forwarder', 'X-B3-TraceId'
+        'Authorization', 'Content-type', 'User-agent', 'X-Custom-Forwarder', 'X-B3-TraceId', 'X-B3-SpanId',
     }
     assert headers['X-B3-TraceId'] == request_context.request.request_id
+    assert headers['X-B3-SpanId'] == request_context.request.span_id