diff --git a/docs/conf.py b/docs/conf.py
index 2062e19..fa00cf8 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -13,7 +13,7 @@
 project = "tastytrade"
 copyright = "2024, Graeme Holliday"
 author = "Graeme Holliday"
-release = "9.4"
+release = "9.5"
 
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
diff --git a/pyproject.toml b/pyproject.toml
index 7054dc5..a529a4e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "tastytrade"
-version = "9.4"
+version = "9.5"
 description = "An unofficial, sync/async SDK for Tastytrade!"
 readme = "README.md"
 requires-python = ">=3.9"
diff --git a/tastytrade/__init__.py b/tastytrade/__init__.py
index 5c62315..b4ae6ab 100644
--- a/tastytrade/__init__.py
+++ b/tastytrade/__init__.py
@@ -4,7 +4,7 @@
 BACKTEST_URL = "https://backtester.vast.tastyworks.com"
 CERT_URL = "https://api.cert.tastyworks.com"
 VAST_URL = "https://vast.tastyworks.com"
-VERSION = "9.4"
+VERSION = "9.5"
 
 logger = logging.getLogger(__name__)
 logger.setLevel(logging.DEBUG)
diff --git a/tastytrade/order.py b/tastytrade/order.py
index 2442c27..45e4219 100644
--- a/tastytrade/order.py
+++ b/tastytrade/order.py
@@ -221,6 +221,17 @@ class OrderRule(TastytradeJsonDataclass):
     order_conditions: list[OrderCondition]
 
 
+class AdvancedInstructions(TastytradeJsonDataclass):
+    """
+    Dataclass containing advanced order rules.
+    """
+
+    #: By default, if a position meant to be closed by a closing order is no longer
+    #: open, the API will turn it into an opening order. With this flag, the API would
+    #: instead discard the closing order.
+    strict_position_effect_validation: bool = False
+
+
 class NewOrder(TastytradeJsonDataclass):
     """
     Dataclass containing information about a new order. Also used for
@@ -241,6 +252,7 @@ class NewOrder(TastytradeJsonDataclass):
     partition_key: Optional[str] = None
     preflight_id: Optional[str] = None
     rules: Optional[OrderRule] = None
+    advanced_instructions: Optional[AdvancedInstructions] = None
 
     @computed_field
     @property
diff --git a/tastytrade/streamer.py b/tastytrade/streamer.py
index 9d40238..779476e 100644
--- a/tastytrade/streamer.py
+++ b/tastytrade/streamer.py
@@ -229,16 +229,19 @@ def __await__(self):
         return self.__aenter__().__await__()
 
     async def __aexit__(self, *exc):
-        self.close()
+        await self.close()
 
-    def close(self) -> None:
+    async def close(self) -> None:
         """
         Closes the websocket connection and cancels the pending tasks.
         """
         self._connect_task.cancel()
         self._heartbeat_task.cancel()
-        if self._reconnect_task is not None:
+        tasks = [self._connect_task, self._heartbeat_task]
+        if self._reconnect_task is not None and not self._reconnect_task.done():
             self._reconnect_task.cancel()
+            tasks.append(self._reconnect_task)
+        await asyncio.gather(*tasks)
 
     async def _connect(self) -> None:
         """
@@ -265,6 +268,9 @@ async def _connect(self) -> None:
                         await self._map_message(type_str, data["data"])
             except ConnectionClosed as e:
                 logger.error(f"Websocket connection closed with {e}")
+            except asyncio.CancelledError:
+                logger.debug("Websocket interrupted, cancelling main loop.")
+                return
             logger.debug("Websocket connection closed, retrying...")
             reconnecting = True
 
@@ -327,10 +333,14 @@ async def _heartbeat(self) -> None:
         Sends a heartbeat message every 10 seconds to keep the connection
         alive.
         """
-        while True:
-            await self._subscribe(SubscriptionType.HEARTBEAT, "")
-            # send the heartbeat every 10 seconds
-            await asyncio.sleep(10)
+        try:
+            while True:
+                await self._subscribe(SubscriptionType.HEARTBEAT, "")
+                # send the heartbeat every 10 seconds
+                await asyncio.sleep(10)
+        except asyncio.CancelledError:
+            logger.debug("Websocket interrupted, cancelling heartbeat.")
+            return
 
     async def _subscribe(
         self,
@@ -399,7 +409,6 @@ def __init__(
         #: Variable number of arguments to pass to the reconnect function
         self.reconnect_args = reconnect_args
 
-        self._session = session
         self._authenticated = False
         self._wss_url = session.dxlink_url
         self._auth_token = session.streamer_token
@@ -421,16 +430,19 @@ def __await__(self):
         return self.__aenter__().__await__()
 
     async def __aexit__(self, *exc):
-        self.close()
+        await self.close()
 
-    def close(self) -> None:
+    async def close(self) -> None:
         """
         Closes the websocket connection and cancels the heartbeat task.
         """
         self._connect_task.cancel()
         self._heartbeat_task.cancel()
-        if self._reconnect_task is not None:
+        tasks = [self._connect_task, self._heartbeat_task]
+        if self._reconnect_task is not None and not self._reconnect_task.done():
             self._reconnect_task.cancel()
+            tasks.append(self._reconnect_task)
+        await asyncio.gather(*tasks)
 
     async def _connect(self) -> None:
         """
@@ -487,6 +499,9 @@ async def _connect(self) -> None:
                         logger.error(f"Streamer error: {message}")
             except ConnectionClosed as e:
                 logger.error(f"Websocket connection closed with {e}")
+            except asyncio.CancelledError:
+                logger.debug("Websocket interrupted, cancelling main loop.")
+                return
             logger.debug("Websocket connection closed, retrying...")
             reconnecting = True
 
@@ -558,12 +573,15 @@ async def _heartbeat(self) -> None:
         alive.
         """
         message = {"type": "KEEPALIVE", "channel": 0}
-
-        while True:
-            logger.debug("sending keepalive message: %s", message)
-            await self._websocket.send(json.dumps(message))
-            # send the heartbeat every 30 seconds
-            await asyncio.sleep(30)
+        try:
+            while True:
+                logger.debug("sending keepalive message: %s", message)
+                await self._websocket.send(json.dumps(message))
+                # send the heartbeat every 30 seconds
+                await asyncio.sleep(30)
+        except asyncio.CancelledError:
+            logger.debug("Websocket interrupted, cancelling heartbeat.")
+            return
 
     async def subscribe(self, event_class: Type[EventType], symbols: list[str]) -> None:
         """
@@ -644,7 +662,7 @@ async def unsubscribe(
         Removes existing subscription for given list of symbols.
         For candles, use :meth:`unsubscribe_candle` instead.
 
-        :param event_type: type of subscription to remove
+        :param event_class: type of subscription to remove
         :param symbols: list of symbols to unsubscribe from
         """
         if not self._authenticated:
@@ -663,11 +681,10 @@ async def subscribe_candle(
         symbols: list[str],
         interval: str,
         start_time: datetime,
-        end_time: Optional[datetime] = None,
         extended_trading_hours: bool = False,
     ) -> None:
         """
-        Subscribes to time series data for the given symbol.
+        Subscribes to candle data for the given list of symbols.
 
         :param symbols: list of symbols to get data for
         :param interval:
@@ -696,8 +713,6 @@ async def subscribe_candle(
                 for ticker in symbols
             ],
         }
-        if end_time is not None:
-            raise TastytradeError("End time no longer supported")
         await self._websocket.send(json.dumps(message))
 
     async def unsubscribe_candle(
diff --git a/tests/test_streamer.py b/tests/test_streamer.py
index b59024d..aa8a248 100644
--- a/tests/test_streamer.py
+++ b/tests/test_streamer.py
@@ -49,7 +49,7 @@ async def test_account_streamer_reconnect(session):
     await streamer._websocket.close()  # type: ignore
     await asyncio.sleep(3)
     assert "test" in ref
-    streamer.close()
+    await streamer.close()
 
 
 async def reconnect_trades(streamer: DXLinkStreamer):
@@ -64,4 +64,4 @@ async def test_dxlink_streamer_reconnect(session):
     await asyncio.sleep(3)
     trade = await streamer.get_event(Trade)
     assert trade.event_symbol == "SPX"
-    streamer.close()
+    await streamer.close()
diff --git a/uv.lock b/uv.lock
index 86315c8..a545b88 100644
--- a/uv.lock
+++ b/uv.lock
@@ -546,7 +546,7 @@ wheels = [
 
 [[package]]
 name = "tastytrade"
-version = "9.4"
+version = "9.5"
 source = { editable = "." }
 dependencies = [
     { name = "httpx" },