diff --git a/CHANGES.md b/CHANGES.md
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,10 +1,19 @@
 Seonbi changelog
 ================
 
+Version 0.2.1
+-------------
+
+Released on September 23, 2021.
+
+ -  Updated the *Standard Korean Language Dictionary* data
+    (*data/ko-kr-stdict.tsv*) to the revision 2021-09.
+
+
 Version 0.2.0
 -------------
 
-Released May 26, 2021.
+Released on May 26, 2021.
 
  -  Added stops (periods/commas/interpuncts) normalizer.
 
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -128,7 +128,7 @@
 
     HTTP/1.1 200 OK
     Content-Type: application/json
-    Server: Seonbi/0.2.0
+    Server: Seonbi/0.2.1
 
     {
       "success": true,
@@ -154,6 +154,13 @@
 See also the [API docs] or [Hackage].
 
 [API docs]: https://dahlia.github.io/seonbi/docs/
+
+
+Deno API
+--------
+
+There is a simple client library for Deno as well.  See also
+the [scripts/deno/](scripts/deno/) directory.
 
 
 License
diff --git a/data/ko-kr-stdict.tsv b/data/ko-kr-stdict.tsv
# file too large to diff: data/ko-kr-stdict.tsv
diff --git a/seonbi.cabal b/seonbi.cabal
--- a/seonbi.cabal
+++ b/seonbi.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           seonbi
-version:        0.2.0
+version:        0.2.1
 synopsis:       SmartyPants for Korean language
 description:    Please see the README.md on GitHub at <https://github.com/dahlia/seonbi>.
 category:       Text