diff --git a/bindoj.opam b/bindoj.opam
index f5085a8..d4892b5 100644
--- a/bindoj.opam
+++ b/bindoj.opam
@@ -6,6 +6,7 @@ maintainer: [
   "Haochen M. Kotoi-Xie <hx@kxc.inc>"
   "Shiya Yamaguchi <wd@kxc.inc>"
   "Yuta Sato <cr@kxc.inc>"
+  "Wataru Kaji <wk@kxc.inc>"
   "KXC Members <info@kxc.inc>"
 ]
 authors: [
@@ -13,6 +14,7 @@ authors: [
   "Haochen M. Kotoi-Xie"
   "Shiya Yamaguchi"
   "Yuta Sato"
+  "Wataru Kaji"
   "KXC Members and Contributors"
 ]
 license: "Apache-2.0"
diff --git a/dune-project b/dune-project
index 489f10c..3d47636 100644
--- a/dune-project
+++ b/dune-project
@@ -9,12 +9,14 @@
   "Haochen M. Kotoi-Xie <hx@kxc.inc>"
   "Shiya Yamaguchi <wd@kxc.inc>"
   "Yuta Sato <cr@kxc.inc>"
+  "Wataru Kaji <wk@kxc.inc>"
   "KXC Members <info@kxc.inc>")
 (authors
   "Hirotetsu Hongo"
   "Haochen M. Kotoi-Xie"
   "Shiya Yamaguchi"
   "Yuta Sato"
+  "Wataru Kaji"
   "KXC Members and Contributors")
 
 (source