diff --git a/config/global.go b/config/global.go
index dc54847..f2c515e 100644
--- a/config/global.go
+++ b/config/global.go
@@ -6,4 +6,11 @@ import "time"
 const ShowDebugLog = false
 
 // Version will show in help message to distinguish different builds.
-var Version = "dev-" + time.Now().Format(time.DateOnly)
+// Use -ldflags="-X github.com/fumiama/WireGold/config.Version=x.y.z" to override.
+var Version = "dev"
+
+func init() {
+	if Version == "dev" {
+		Version = "dev-" + time.Now().Format(time.DateOnly)
+	}
+}