diff --git a/parser/doc.go b/parser/doc.go
new file mode 100644
index 00000000..25e48969
--- /dev/null
+++ b/parser/doc.go
@@ -0,0 +1,2 @@
+// Package parser includes the actual parsing logic using cgo to access libpg_query.
+package parser
diff --git a/pg_query.go b/pg_query.go
index 8058b652..b5ea353e 100644
--- a/pg_query.go
+++ b/pg_query.go
@@ -1,3 +1,5 @@
+//go:build cgo
+
 package pg_query
 
 import (