diff --git a/viper.go b/viper.go
index 31b41a6..43b5842 100644
--- a/viper.go
+++ b/viper.go
@@ -685,6 +685,18 @@ func (v *Viper) GetDuration(key string) time.Duration {
 	return cast.ToDuration(v.Get(key))
 }
 
+// GetBoolSlice returns the value associated with the key as a slice of booleans.
+func GetBoolSlice(key string) []bool { return v.GetBoolSlice(key) }
+func (v *Viper) GetBoolSlice(key string) []bool {
+	return cast.ToBoolSlice(v.Get(key))
+}
+
+// GetDurationSlice returns the value associated with the key as a slice of durations.
+func GetDurationSlice(key string) []string { return v.GetDurationSlice(key) }
+func (v *Viper) GetDurationSlice(key string) []string {
+	return cast.ToDurationSlice(v.Get(key))
+}
+
 // GetStringSlice returns the value associated with the key as a slice of strings.
 func GetStringSlice(key string) []string { return v.GetStringSlice(key) }
 func (v *Viper) GetStringSlice(key string) []string {