diff --git a/go.mod b/go.mod
index 9611f46..a9b9032 100644
--- a/go.mod
+++ b/go.mod
@@ -14,7 +14,7 @@ require (
 	github.com/pkg/errors v0.9.1
 	github.com/rhysd/go-github-selfupdate v1.2.3
 	github.com/spf13/cobra v0.0.7
-	github.com/spf13/viper v1.8.1
+	github.com/spf13/viper v1.15.0
 	golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6 // indirect
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
 	google.golang.org/api v0.50.0