diff --git a/libp2p/security/security_multistream.py b/libp2p/security/security_multistream.py
index 9b341ed7..a9c4b19c 100644
--- a/libp2p/security/security_multistream.py
+++ b/libp2p/security/security_multistream.py
@@ -29,9 +29,6 @@ from libp2p.protocol_muxer.multiselect_client import (
 from libp2p.protocol_muxer.multiselect_communicator import (
     MultiselectCommunicator,
 )
-from libp2p.transport.exceptions import (
-    SecurityUpgradeFailure,
-)
 
 """
 Represents a secured connection object, which includes a connection and details about
diff --git a/libp2p/stream_muxer/muxer_multistream.py b/libp2p/stream_muxer/muxer_multistream.py
index 4a07b261..322db912 100644
--- a/libp2p/stream_muxer/muxer_multistream.py
+++ b/libp2p/stream_muxer/muxer_multistream.py
@@ -33,9 +33,6 @@ from libp2p.stream_muxer.yamux.yamux import (
     PROTOCOL_ID,
     Yamux,
 )
-from libp2p.transport.exceptions import (
-    MuxerUpgradeFailure,
-)
 
 
 class MuxerMultistream: