diff --git a/aiobotocore/config.py b/aiobotocore/config.py
index 0da0e8e7..8d7cc6e1 100644
--- a/aiobotocore/config.py
+++ b/aiobotocore/config.py
@@ -15,7 +15,7 @@ def __init__(self, connector_args=None, **kwargs):
 
         if 'keepalive_timeout' not in self.connector_args:
             # AWS has a 20 second idle timeout:
-            # https://forums.aws.amazon.com/message.jspa?messageID=215367
+            #   https://web.archive.org/web/20150926192339/https://forums.aws.amazon.com/message.jspa?messageID=215367
             # and aiohttp default timeout is 30s so we set it to something
             # reasonable here
             self.connector_args['keepalive_timeout'] = 12
diff --git a/aiobotocore/httpsession.py b/aiobotocore/httpsession.py
index 5ae222f4..b98c59ed 100644
--- a/aiobotocore/httpsession.py
+++ b/aiobotocore/httpsession.py
@@ -80,7 +80,7 @@ def __init__(
         self._connector_args = connector_args
         if self._connector_args is None:
             # AWS has a 20 second idle timeout:
-            #   https://forums.aws.amazon.com/message.jspa?messageID=215367
+            #   https://web.archive.org/web/20150926192339/https://forums.aws.amazon.com/message.jspa?messageID=215367
             # aiohttp default timeout is 30s so set something reasonable here
             self._connector_args = dict(keepalive_timeout=12)