diff --git a/config/dpp/hooks/lexima.lua b/config/dpp/hooks/lexima.lua
index b7423b15..af6df930 100644
--- a/config/dpp/hooks/lexima.lua
+++ b/config/dpp/hooks/lexima.lua
@@ -55,5 +55,6 @@ lexima_util.altercmd([[rc]], [[Recache]])
 lexima_util.altercmd([[ej]], [[Translate]]) -- 英語から日本語へ
 lexima_util.altercmd([[je]], [[Translate!]]) -- 日本語から英語へ
 lexima_util.altercmd([[gcf]], [[GinChaperon %]])
+lexima_util.altercmd([[cal]], [[Calendar]])
 
 -- }}}
diff --git a/config/dpp/toml/tools.toml b/config/dpp/toml/tools.toml
index 4ac4035e..27851876 100644
--- a/config/dpp/toml/tools.toml
+++ b/config/dpp/toml/tools.toml
@@ -51,6 +51,10 @@ on_cmd = 'Wrapwidth'
 repo = 'thinca/vim-showtime'
 on_cmd = ['ShowtimeStart', 'ShowtimeResume']
 
+[[plugins]]
+repo = 'itchyny/calendar.vim'
+on_cmd = 'Calendar'
+
 [[plugins]] # for skkeleton
 repo = 'skk-dev/dict'
 if = false