diff --git a/msgraph/models.go b/msgraph/models.go
index 5cb06d5c..797fb152 100644
--- a/msgraph/models.go
+++ b/msgraph/models.go
@@ -1102,8 +1102,8 @@ type PermissionScope struct {
 }
 
 type PersistentBrowserSessionControl struct {
-	IsEnabled *bool   `json:"isEnabled,omitempty"`
-	Mode      *string `json:"mode,omitempty"`
+	IsEnabled *bool                         `json:"isEnabled,omitempty"`
+	Mode      *PersistentBrowserSessionMode `json:"mode,omitempty"`
 }
 
 type PhoneAuthenticationMethod struct {
diff --git a/msgraph/valuetypes.go b/msgraph/valuetypes.go
index 81ff9aa7..37c59d65 100644
--- a/msgraph/valuetypes.go
+++ b/msgraph/valuetypes.go
@@ -455,6 +455,13 @@ const (
 	PermissionScopeTypeUser  PermissionScopeType = "User"
 )
 
+type PersistentBrowserSessionMode = string
+
+const (
+	PersistentBrowserSessionModeAlways PersistentBrowserSessionMode = "always"
+	PersistentBrowserSessionModeNever  PersistentBrowserSessionMode = "never"
+)
+
 type PreferredSingleSignOnMode = StringNullWhenEmpty
 
 const (