diff --git a/homeassistant/helpers/script.py b/homeassistant/helpers/script.py
index a67ef60c799..5e866cddc79 100644
--- a/homeassistant/helpers/script.py
+++ b/homeassistant/helpers/script.py
@@ -1589,6 +1589,9 @@ class Script:
                         target, referenced, script[CONF_SEQUENCE]
                     )
 
+            elif action == cv.SCRIPT_ACTION_SEQUENCE:
+                Script._find_referenced_target(target, referenced, step[CONF_SEQUENCE])
+
     @cached_property
     def referenced_devices(self) -> set[str]:
         """Return a set of referenced devices."""
@@ -1636,6 +1639,9 @@ class Script:
                 for script in step[CONF_PARALLEL]:
                     Script._find_referenced_devices(referenced, script[CONF_SEQUENCE])
 
+            elif action == cv.SCRIPT_ACTION_SEQUENCE:
+                Script._find_referenced_devices(referenced, step[CONF_SEQUENCE])
+
     @cached_property
     def referenced_entities(self) -> set[str]:
         """Return a set of referenced entities."""
@@ -1684,6 +1690,9 @@ class Script:
                 for script in step[CONF_PARALLEL]:
                     Script._find_referenced_entities(referenced, script[CONF_SEQUENCE])
 
+            elif action == cv.SCRIPT_ACTION_SEQUENCE:
+                Script._find_referenced_entities(referenced, step[CONF_SEQUENCE])
+
     def run(
         self, variables: _VarsType | None = None, context: Context | None = None
     ) -> None:
diff --git a/tests/helpers/test_script.py b/tests/helpers/test_script.py
index c438e333ae6..d7c00e90bd6 100644
--- a/tests/helpers/test_script.py
+++ b/tests/helpers/test_script.py
@@ -4118,6 +4118,14 @@ async def test_referenced_labels(hass: HomeAssistant) -> None:
                         }
                     ],
                 },
+                {
+                    "sequence": [
+                        {
+                            "action": "test.script",
+                            "data": {"label_id": "label_sequence"},
+                        }
+                    ],
+                },
             ]
         ),
         "Test Name",
@@ -4135,6 +4143,7 @@ async def test_referenced_labels(hass: HomeAssistant) -> None:
         "label_if_then",
         "label_if_else",
         "label_parallel",
+        "label_sequence",
     }
     # Test we cache results.
     assert script_obj.referenced_labels is script_obj.referenced_labels
@@ -4220,6 +4229,14 @@ async def test_referenced_floors(hass: HomeAssistant) -> None:
                         }
                     ],
                 },
+                {
+                    "sequence": [
+                        {
+                            "action": "test.script",
+                            "data": {"floor_id": "floor_sequence"},
+                        }
+                    ],
+                },
             ]
         ),
         "Test Name",
@@ -4236,6 +4253,7 @@ async def test_referenced_floors(hass: HomeAssistant) -> None:
         "floor_if_then",
         "floor_if_else",
         "floor_parallel",
+        "floor_sequence",
     }
     # Test we cache results.
     assert script_obj.referenced_floors is script_obj.referenced_floors
@@ -4321,6 +4339,14 @@ async def test_referenced_areas(hass: HomeAssistant) -> None:
                         }
                     ],
                 },
+                {
+                    "sequence": [
+                        {
+                            "action": "test.script",
+                            "data": {"area_id": "area_sequence"},
+                        }
+                    ],
+                },
             ]
         ),
         "Test Name",
@@ -4337,6 +4363,7 @@ async def test_referenced_areas(hass: HomeAssistant) -> None:
         "area_if_then",
         "area_if_else",
         "area_parallel",
+        "area_sequence",
         # 'area_service_template',  # no area extraction from template
     }
     # Test we cache results.
@@ -4437,6 +4464,14 @@ async def test_referenced_entities(hass: HomeAssistant) -> None:
                         }
                     ],
                 },
+                {
+                    "sequence": [
+                        {
+                            "action": "test.script",
+                            "data": {"entity_id": "light.sequence"},
+                        }
+                    ],
+                },
             ]
         ),
         "Test Name",
@@ -4456,6 +4491,7 @@ async def test_referenced_entities(hass: HomeAssistant) -> None:
         "light.if_then",
         "light.if_else",
         "light.parallel",
+        "light.sequence",
         # "light.service_template",  # no entity extraction from template
         "scene.hello",
         "sensor.condition",
@@ -4554,6 +4590,14 @@ async def test_referenced_devices(hass: HomeAssistant) -> None:
                         }
                     ],
                 },
+                {
+                    "sequence": [
+                        {
+                            "action": "test.script",
+                            "target": {"device_id": "sequence-device"},
+                        }
+                    ],
+                },
             ]
         ),
         "Test Name",
@@ -4575,6 +4619,7 @@ async def test_referenced_devices(hass: HomeAssistant) -> None:
         "if-then",
         "if-else",
         "parallel-device",
+        "sequence-device",
     }
     # Test we cache results.
     assert script_obj.referenced_devices is script_obj.referenced_devices