diff --git a/log/log.go b/log/log.go
index 04e906c07..c167fff72 100644
--- a/log/log.go
+++ b/log/log.go
@@ -345,6 +345,11 @@ func Fatalf(format string, args ...interface{}) {
 	baseLogger.sourced().Fatalf(format, args...)
 }
 
+// AddHook adds hook to Prometheus' original logger.
+func AddHook(hook logrus.Hook) {
+	origLogger.Hooks.Add(hook)
+}
+
 type errorLogWriter struct{}
 
 func (errorLogWriter) Write(b []byte) (int, error) {