diff --git a/posthog/client.py b/posthog/client.py
index 2148e9ff..2ddecca2 100644
--- a/posthog/client.py
+++ b/posthog/client.py
@@ -1819,6 +1819,12 @@ def get_feature_flag_payload(
         Category:
             Feature flags
         """
+        warnings.warn(
+            "get_feature_flag_payload is deprecated and will be removed in a future version. "
+            "Please use get_feature_flag_result instead.",
+            DeprecationWarning,
+            stacklevel=2,
+        )
         if send_feature_flag_events:
             warnings.warn(
                 "send_feature_flag_events is deprecated in get_feature_flag_payload() and will be removed "
diff --git a/posthog/test/test_client.py b/posthog/test/test_client.py
index a866b90b..8db31fe0 100644
--- a/posthog/test/test_client.py
+++ b/posthog/test/test_client.py
@@ -44,7 +44,11 @@ def test_requires_api_key(self):
 
     def test_empty_flush(self):
         self.client.flush()
-
+    def test_get_feature_flag_payload_deprecation_warning(self):
+        # This tells Python: "Expect a DeprecationWarning in the next line"
+        with self.assertWarns(DeprecationWarning):
+            self.client.get_feature_flag_payload("key", "distinct_id")
+            
     def test_basic_capture(self):
         with mock.patch("posthog.client.batch_post") as mock_post:
             client = Client(FAKE_TEST_API_KEY, on_error=self.set_fail, sync_mode=True)