diff --git a/aiogram/bot/base.py b/aiogram/bot/base.py
index f7e4ba83..3c93d136 100644
--- a/aiogram/bot/base.py
+++ b/aiogram/bot/base.py
@@ -110,7 +110,7 @@ class BaseBot:
         self._temp_sessions.append(session)
         return session
 
-    def destroy_temp_session(self, session: aiohttp.ClientSession):
+    async def destroy_temp_session(self, session: aiohttp.ClientSession):
         """
         Destroy temporary session
 
@@ -118,7 +118,7 @@ class BaseBot:
         :type session: :obj:`aiohttp.ClientSession`
         """
         if not session.closed:
-            session.close()
+            await session.close()
         if session in self._temp_sessions:
             self._temp_sessions.remove(session)
 
@@ -181,7 +181,7 @@ class BaseBot:
                 dest.seek(0)
             return dest
         finally:
-            self.destroy_temp_session(session)
+            await self.destroy_temp_session(session)
 
     async def send_file(self, file_type, method, file, payload) -> Union[Dict, base.Boolean]:
         """
diff --git a/examples/proxy_and_emojize.py b/examples/proxy_and_emojize.py
index 10c4e8ec..2b5f5d2d 100644
--- a/examples/proxy_and_emojize.py
+++ b/examples/proxy_and_emojize.py
@@ -48,7 +48,7 @@ async def cmd_start(message: types.Message):
     await bot.send_message(message.chat.id, emojize(text(*content, sep='\n')), parse_mode=ParseMode.MARKDOWN)
 
     # Destroy temp session
-    bot.destroy_temp_session(session)
+    await bot.destroy_temp_session(session)
 
     # In this example you can see emoji codes: ":globe_showing_Americas:" and ":locked_with_key:"
     # You can find full emoji cheat sheet at https://www.webpagefx.com/tools/emoji-cheat-sheet/