diff --git a/go.mod b/go.mod
index 1a715ee..9990006 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@ module github.com/go-ruby-msgpack/go-ruby-msgpack.github.io
 
 go 1.27.3
 
-require github.com/go-fleettools/landingkit v0.18.0
+require github.com/go-fleettools/landingkit v0.20.0
diff --git a/go.sum b/go.sum
index eb69461..0b5d675 100644
--- a/go.sum
+++ b/go.sum
@@ -2,3 +2,4 @@ github.com/go-fleettools/landingkit v0.7.1 h1:Fw8Chr7QZ5+Y5KjEyPDlfMjficF4rH/f2d
 github.com/go-fleettools/landingkit v0.7.1/go.mod h1:gBpbziqFcmcjtNknPjy5+AAzGZ5L+pPr9mIJZHpDlZc=
 github.com/go-fleettools/landingkit v0.14.0/go.mod h1:gBpbziqFcmcjtNknPjy5+AAzGZ5L+pPr9mIJZHpDlZc=
 github.com/go-fleettools/landingkit v0.18.0/go.mod h1:gBpbziqFcmcjtNknPjy5+AAzGZ5L+pPr9mIJZHpDlZc=
+github.com/go-fleettools/landingkit v0.20.0/go.mod h1:gBpbziqFcmcjtNknPjy5+AAzGZ5L+pPr9mIJZHpDlZc=