diff --git a/docs/users_guide/exts/kind_signatures.rst b/docs/users_guide/exts/kind_signatures.rst
index 88887adc35bd6f0640b72f5f991f9c8fb2dcf6f2..a953899be207ec01933039dec81a11f5a05aec95 100644
--- a/docs/users_guide/exts/kind_signatures.rst
+++ b/docs/users_guide/exts/kind_signatures.rst
@@ -37,6 +37,10 @@ This extension enables kind signatures in the following places:
 
          data Set (cxt :: Type -> Type) a = Set [a]
 
+-  ``newtype`` declarations: ::
+
+         newtype Set (cxt :: Type -> Type) a = Set [a]
+
 -  ``type`` declarations: ::
 
          type T (f :: Type -> Type) = f Int