diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..f15384a
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,7 @@
+module github.com/ivuorinen/tsm
+
+go 1.24
+
+require (
+	github.com/spf13/viper v1.18.2
+)