diff --git a/CHANGELOG.md b/CHANGELOG.md
index b77b9915..0a672bd3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## 2021-07-28: v5.0.11.1
 
-Uploaded to Hackage
+Uploaded to Hackage: <https://hackage.haskell.org/package/Jikka>
 
 ## 2021-07-21: v5.0.11.0
 
diff --git a/README.md b/README.md
index 66fd964b..267c557a 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,8 @@ for developpers:
     -   [CONTRIBUTING.ja.md](https://github.com/kmyk/Jikka/blob/master/CONTRIBUTING.ja.md) (Japanese translation)
 -   [docs/DESIGN.md](https://github.com/kmyk/Jikka/blob/master/docs/DESIGN.md) (Japanese)
 -   [docs/how-it-works.pdf](https://github.com/kmyk/Jikka/blob/master/docs/how-it-works.pdf) (Japanese)
--   [Haddock](https://kmyk.github.io/Jikka/)
+-   [Haddock](https://hackage.haskell.org/package/Jikka)
+    -   [Haddock (master)](https://kmyk.github.io/Jikka/)
 
 
 ## Examples