diff --git a/go.mod b/go.mod
index f0a32af..25f2736 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,7 @@ go 1.21.4
 require (
 	github.com/awesome-gocui/gocui v1.1.0
 	go.wit.com/log v0.13.18
+	go.wit.com/toolkits/tree v0.13.18
 	go.wit.com/widget v1.1.9
 )
 
diff --git a/go.sum b/go.sum
index a7e29c3..439d982 100644
--- a/go.sum
+++ b/go.sum
@@ -14,6 +14,8 @@ go.wit.com/dev/davecgh/spew v1.1.4 h1:C9hj/rjlUpdK+E6aroyLjCbS5MFcyNUOuP1ICLWdNe
 go.wit.com/dev/davecgh/spew v1.1.4/go.mod h1:sihvWmnQ/09FWplnEmozt90CCVqBtGuPXM811tgfhFA=
 go.wit.com/log v0.13.18 h1:XJNaQWX+8m12p3mH+kYih3zNjb0kScZDFpJa4c2TvKE=
 go.wit.com/log v0.13.18/go.mod h1:BaJBfHFqcJSJLXGQ9RHi3XVhPgsStxSMZRlaRxW4kAo=
+go.wit.com/toolkits/tree v0.13.18 h1:oGoLNc1Ax9/sM9nrQQvutjbpDAyORA2q/9R2vXprw/0=
+go.wit.com/toolkits/tree v0.13.18/go.mod h1:rrcu2kaZH9gAy9DzEgAGNVI8hOB/BsoKaR03zRCcPW0=
 go.wit.com/widget v1.1.9 h1:iltjAL8UZu0YPfia8/qyfDx04BDxhj8rURcx0OHVBEc=
 go.wit.com/widget v1.1.9/go.mod h1:I8tnD3x3ECbB/CRNnLCdC+uoyk7rK0AEkzK1bQYSqoQ=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68 h1:nxC68pudNYkKU6jWhgrqdreuFiOQWj1Fs7T3VrH4Pjw=