diff --git a/README.md b/README.md
index abf1d51be..7afc3ecca 100644
--- a/README.md
+++ b/README.md
@@ -123,7 +123,7 @@ Please see [Contribution guide](./CONTRIBUTING.md).
 
 :four_leaf_clover: Copyright
 ----------------------------------------------------------------
-> Copyright (c) 2014-2018 syuilo
+> Copyright (c) 2014-2019 syuilo
 
 Misskey is an open-source software licensed under the [GNU AGPLv3](LICENSE).
 
diff --git a/src/const.json b/src/const.json
index d067ad363..f0892e54c 100644
--- a/src/const.json
+++ b/src/const.json
@@ -1,3 +1,3 @@
 {
-	"copyright": "Copyright (c) 2014-2018 syuilo"
+	"copyright": "Copyright (c) 2014-2019 syuilo"
 }