diff --git a/peer/go.mod b/peer/go.mod
index d8c1d3d148..1f05d28ad7 100644
--- a/peer/go.mod
+++ b/peer/go.mod
@@ -1,3 +1,4 @@
+// Deprecated: Use github.com/decred/dcrd/peer/v3 instead.
 module github.com/decred/dcrd/peer/v2
 
 go 1.11