diff --git a/vendor/github.com/armon/go-metrics/const_windows.go b/vendor/github.com/armon/go-metrics/const_windows.go
new file mode 100644
index 0000000..38136af
--- /dev/null
+++ b/vendor/github.com/armon/go-metrics/const_windows.go
@@ -0,0 +1,13 @@
+// +build windows
+
+package metrics
+
+import (
+	"syscall"
+)
+
+const (
+	// DefaultSignal is used with DefaultInmemSignal
+	// Windows has no SIGUSR1, use SIGBREAK
+	DefaultSignal = syscall.Signal(21)
+)