diff --git a/viper.go b/viper.go
index 38bd17d..b22bcce 100644
--- a/viper.go
+++ b/viper.go
@@ -34,7 +34,7 @@ var configPaths []string
 var configName string = "config"
 
 // extensions Supported
-var SupportedExts []string = []string{"json", "toml", "yaml"}
+var SupportedExts []string = []string{"json", "toml", "yaml", "yml"}
 var configFile string
 var configType string