diff --git a/cmd/govulncheck/gotypesalias.go b/cmd/govulncheck/gotypesalias.go
new file mode 100644
index 00000000..288c10c2
--- /dev/null
+++ b/cmd/govulncheck/gotypesalias.go
@@ -0,0 +1,12 @@
+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build go1.23
+
+//go:debug gotypesalias=1
+
+package main
+
+// Materialize aliases whenever the go toolchain version is after 1.23 (#69772).
+// Remove this file after go.mod >= 1.23 (which implies gotypesalias=1).