diff --git a/README.md b/README.md
index 7c7dca1cc7..353116c72c 100644
--- a/README.md
+++ b/README.md
@@ -106,6 +106,7 @@ language", and integrate with each other with ease.
  * [http4s](https://github.com/http4s/http4s): A minimal, idiomatic Scala interface for HTTP
  * [hammock](https://github.com/pepegar/hammock): Purely functional HTTP client
  * [atto](https://github.com/tpolecat/atto): friendly little text parsers
+ * [decline](https://github.com/bkirwi/decline): A composable command-line parser
 
 *Feel free to submit a PR if you want a project you maintain to be added to this list.*
 
diff --git a/docs/src/main/tut/index.md b/docs/src/main/tut/index.md
index 39c6a4db86..2c7e3e0dfd 100644
--- a/docs/src/main/tut/index.md
+++ b/docs/src/main/tut/index.md
@@ -118,6 +118,7 @@ language", and integrate with each other with ease.
  * [http4s](https://github.com/http4s/http4s): A minimal, idiomatic Scala interface for HTTP
  * [hammock](https://github.com/pepegar/hammock): Purely functional HTTP client
  * [atto](https://github.com/tpolecat/atto): friendly little text parsers
+ * [decline](https://github.com/bkirwi/decline): A composable command-line parser
 
 
 ## <a name="copyright" href="#copyright"></a>Copyright and License