diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..cc38eaf
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,5 @@
+module go.wit.com/apps/xstartplacement
+
+go 1.22.9
+
+require github.com/BurntSushi/xgb v0.0.0-20210121224620-deaf085860bc
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..ae50bbf
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,2 @@
+github.com/BurntSushi/xgb v0.0.0-20210121224620-deaf085860bc h1:7D+Bh06CRPCJO3gr2F7h1sriovOZ8BMhca2Rg85c2nk=
+github.com/BurntSushi/xgb v0.0.0-20210121224620-deaf085860bc/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=