diff --git a/serial/go.sum b/serial/go.sum
index 8b13789..c49500b 100644
--- a/serial/go.sum
+++ b/serial/go.sum
@@ -1 +1 @@
-
+github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=