diff --git a/tools.go b/tools.go
new file mode 100644
index 0000000..5019001
--- /dev/null
+++ b/tools.go
@@ -0,0 +1,8 @@
+//go:build tools
+// +build tools
+
+package main
+
+import (
+	_ "github.com/google/licenseclassifier/tools/license_serializer"
+)