diff --git a/README.markdown b/README.markdown
--- a/README.markdown
+++ b/README.markdown
@@ -4,6 +4,8 @@
 [![Hackage](https://img.shields.io/hackage/v/derulo)](https://hackage.haskell.org/package/derulo)
 [![Stackage](https://www.stackage.org/package/derulo/badge/nightly?label=stackage)](https://www.stackage.org/package/derulo)
 
+:warning: This package is not maintained anymore.
+
 Derulo is a Haskell library and executable that parses and renders JSON simply.
 It has extensive documentation [on Hackage][].
 
diff --git a/derulo.cabal b/derulo.cabal
--- a/derulo.cabal
+++ b/derulo.cabal
@@ -1,10 +1,13 @@
 cabal-version: 2.2
 
 name: derulo
-version: 2.0.0.2
+version: 2.0.0.3
 
 synopsis: Parse and render JSON simply.
-description: Derulo parses and renders JSON simply.
+description:
+  Warning: This package is not maintained anymore.
+  .
+  Derulo parses and renders JSON simply.
 
 build-type: Simple
 category: JSON