diff --git a/redbot/core/bot.py b/redbot/core/bot.py
index 4e29659e3..eccba66f4 100644
--- a/redbot/core/bot.py
+++ b/redbot/core/bot.py
@@ -295,6 +295,13 @@ class Red(RedBase, discord.AutoShardedClient):
     You're welcome Caleb.
     """
 
+    async def logout(self):
+        """Logs out of Discord and closes all connections."""
+        if self._sentry_mgr:
+            await self._sentry_mgr.close()
+
+        await super().logout()
+
     async def shutdown(self, *, restart: bool = False):
         """Gracefully quit Red.
 
diff --git a/redbot/core/sentry.py b/redbot/core/sentry.py
index f0d6e20d6..23df5a7e4 100644
--- a/redbot/core/sentry.py
+++ b/redbot/core/sentry.py
@@ -1,6 +1,8 @@
+import asyncio
 import logging
 from raven import Client
 from raven.handlers.logging import SentryHandler
+from raven_aiohttp import AioHttpTransport
 
 from redbot.core import __version__
 
@@ -19,6 +21,7 @@ class SentryManager:
             release=__version__,
             include_paths=["redbot"],
             enable_breadcrumbs=False,
+            transport=AioHttpTransport,
         )
         self.handler = SentryHandler(self.client)
         self.logger = logger
@@ -30,3 +33,9 @@ class SentryManager:
     def disable(self):
         """Disable error reporting for Sentry."""
         self.logger.removeHandler(self.handler)
+        loop = asyncio.get_event_loop()
+        loop.create_task(self.close())
+
+    async def close(self):
+        """Wait for the Sentry client to send pending messages and shut down."""
+        await self.client.remote.get_transport().close()
diff --git a/requirements.txt b/requirements.txt
index 24280b82e..10e65287f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,3 +8,4 @@ pyyaml==3.12
 fuzzywuzzy[speedup]<=0.16.0
 Red-Trivia>=1.1.1
 async-timeout<3.0.0
+raven-aiohttp==0.7.0
\ No newline at end of file