diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..89e370f
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,10 @@
+module go.wit.com/lib/gui/shell
+
+go 1.22.9
+
+require (
+	github.com/go-cmd/cmd v1.4.3
+	go.wit.com/log v0.22.6
+)
+
+require go.wit.com/dev/davecgh/spew v1.1.4 // indirect
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..8ca890d
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,8 @@
+github.com/go-cmd/cmd v1.4.3 h1:6y3G+3UqPerXvPcXvj+5QNPHT02BUw7p6PsqRxLNA7Y=
+github.com/go-cmd/cmd v1.4.3/go.mod h1:u3hxg/ry+D5kwh8WvUkHLAMe2zQCaXd00t35WfQaOFk=
+github.com/go-test/deep v1.1.0 h1:WOcxcdHcvdgThNXjw0t76K42FXTU7HpNQWHpA2HHNlg=
+github.com/go-test/deep v1.1.0/go.mod h1:5C2ZWiW0ErCdrYzpqxLbTX7MG14M9iiw8DgHncVwcsE=
+go.wit.com/dev/davecgh/spew v1.1.4 h1:C9hj/rjlUpdK+E6aroyLjCbS5MFcyNUOuP1ICLWdNek=
+go.wit.com/dev/davecgh/spew v1.1.4/go.mod h1:sihvWmnQ/09FWplnEmozt90CCVqBtGuPXM811tgfhFA=
+go.wit.com/log v0.22.6 h1:S55jsyvUvnX/jTgPYzV9ikhZpZq2QR8luY0TWf7cj3Y=
+go.wit.com/log v0.22.6/go.mod h1:1QIeKgqDgJ4XXPwNJtfVeI3usico9e/3CNlwSK0dyYc=