diff --git a/interface.go b/interface.go
index cec92d6d..2071b596 100644
--- a/interface.go
+++ b/interface.go
@@ -19,10 +19,6 @@ type StreamID = protocol.StreamID
 // A Version is a QUIC version number.
 type Version = protocol.Version
 
-// A VersionNumber is a QUIC version number.
-// Deprecated: VersionNumber was renamed to Version.
-type VersionNumber = Version
-
 const (
 	// Version1 is RFC 9000
 	Version1 = protocol.Version1
diff --git a/logging/interface.go b/logging/interface.go
index 254911bd..1f8edb92 100644
--- a/logging/interface.go
+++ b/logging/interface.go
@@ -36,9 +36,6 @@ type (
 	StreamNum = protocol.StreamNum
 	// The StreamType is the type of the stream (unidirectional or bidirectional).
 	StreamType = protocol.StreamType
-	// The VersionNumber is the QUIC version.
-	// Deprecated: use Version instead.
-	VersionNumber = protocol.Version
 	// The Version is the QUIC version.
 	Version = protocol.Version