diff --git a/ext/dynblock/public.go b/ext/dynblock/public.go
index f4c55c8..a5bfd94 100644
--- a/ext/dynblock/public.go
+++ b/ext/dynblock/public.go
@@ -1,3 +1,6 @@
+// Package dynblock provides an extension to HCL that allows dynamic
+// declaration of nested blocks in certain contexts via a special block type
+// named "dynamic".
 package dynblock
 
 import (