diff --git a/github/apps_marketplace.go b/github/apps_marketplace.go
index 13d09f2efba..f58c6ff3932 100644
--- a/github/apps_marketplace.go
+++ b/github/apps_marketplace.go
@@ -75,6 +75,20 @@ type MarketplacePlanAccount struct {
 	MarketplacePendingChange *MarketplacePendingChange `json:"marketplace_pending_change,omitempty"`
 }
 
+// SetStubbed configures the MarketplaceService Stubbed property.
+//
+// GitHub API docs: https://docs.github.com/en/developers/github-marketplace/testing-your-app#testing-apis
+func (s *MarketplaceService) SetStubbed(stubbed bool) {
+	s.Stubbed = stubbed
+}
+
+// GetStubbed returns the MarketplaceService Stubbed property.
+//
+// GitHub API docs: https://docs.github.com/en/developers/github-marketplace/testing-your-app#testing-apis
+func (s *MarketplaceService) GetStubbed() bool {
+	return s.Stubbed
+}
+
 // ListPlans lists all plans for your Marketplace listing.
 //
 // GitHub API docs: https://docs.github.com/en/free-pro-team@latest/rest/reference/apps#list-plans
@@ -149,7 +163,7 @@ func (s *MarketplaceService) GetPlanAccountForAccount(ctx context.Context, accou
 // GitHub API docs: https://docs.github.com/en/free-pro-team@latest/rest/reference/apps/#list-subscriptions-for-the-authenticated-user
 func (s *MarketplaceService) ListMarketplacePurchasesForUser(ctx context.Context, opts *ListOptions) ([]*MarketplacePurchase, *Response, error) {
 	uri := "user/marketplace_purchases"
-	if s.Stubbed {
+	if s.GetStubbed() {
 		uri = "user/marketplace_purchases/stubbed"
 	}
 
@@ -173,7 +187,7 @@ func (s *MarketplaceService) ListMarketplacePurchasesForUser(ctx context.Context
 
 func (s *MarketplaceService) marketplaceURI(endpoint string) string {
 	url := "marketplace_listing"
-	if s.Stubbed {
+	if s.GetStubbed() {
 		url = "marketplace_listing/stubbed"
 	}
 	return url + "/" + endpoint
diff --git a/github/apps_marketplace_test.go b/github/apps_marketplace_test.go
index fd2d26cf1fc..f596ff0feec 100644
--- a/github/apps_marketplace_test.go
+++ b/github/apps_marketplace_test.go
@@ -27,7 +27,7 @@ func TestMarketplaceService_ListPlans(t *testing.T) {
 	})
 
 	opt := &ListOptions{Page: 1, PerPage: 2}
-	client.Marketplace.Stubbed = false
+	client.Marketplace.SetStubbed(false)
 	ctx := context.Background()
 	plans, _, err := client.Marketplace.ListPlans(ctx, opt)
 	if err != nil {
@@ -59,7 +59,7 @@ func TestMarketplaceService_Stubbed_ListPlans(t *testing.T) {
 	})
 
 	opt := &ListOptions{Page: 1, PerPage: 2}
-	client.Marketplace.Stubbed = true
+	client.Marketplace.SetStubbed(true)
 	ctx := context.Background()
 	plans, _, err := client.Marketplace.ListPlans(ctx, opt)
 	if err != nil {
@@ -82,7 +82,7 @@ func TestMarketplaceService_ListPlanAccountsForPlan(t *testing.T) {
 	})
 
 	opt := &ListOptions{Page: 1, PerPage: 2}
-	client.Marketplace.Stubbed = false
+	client.Marketplace.SetStubbed(false)
 	ctx := context.Background()
 	accounts, _, err := client.Marketplace.ListPlanAccountsForPlan(ctx, 1, opt)
 	if err != nil {
@@ -114,7 +114,7 @@ func TestMarketplaceService_Stubbed_ListPlanAccountsForPlan(t *testing.T) {
 	})
 
 	opt := &ListOptions{Page: 1, PerPage: 2}
-	client.Marketplace.Stubbed = true
+	client.Marketplace.SetStubbed(true)
 	ctx := context.Background()
 	accounts, _, err := client.Marketplace.ListPlanAccountsForPlan(ctx, 1, opt)
 	if err != nil {
@@ -136,7 +136,7 @@ func TestMarketplaceService_GetPlanAccountForAccount(t *testing.T) {
 		fmt.Fprint(w, `{"id":1, "marketplace_pending_change": {"id": 77}}`)
 	})
 
-	client.Marketplace.Stubbed = false
+	client.Marketplace.SetStubbed(false)
 	ctx := context.Background()
 	account, _, err := client.Marketplace.GetPlanAccountForAccount(ctx, 1)
 	if err != nil {
@@ -167,7 +167,7 @@ func TestMarketplaceService_Stubbed_GetPlanAccountForAccount(t *testing.T) {
 		fmt.Fprint(w, `{"id":1}`)
 	})
 
-	client.Marketplace.Stubbed = true
+	client.Marketplace.SetStubbed(true)
 	ctx := context.Background()
 	account, _, err := client.Marketplace.GetPlanAccountForAccount(ctx, 1)
 	if err != nil {
@@ -190,7 +190,7 @@ func TestMarketplaceService_ListMarketplacePurchasesForUser(t *testing.T) {
 	})
 
 	opt := &ListOptions{Page: 1, PerPage: 2}
-	client.Marketplace.Stubbed = false
+	client.Marketplace.SetStubbed(false)
 	ctx := context.Background()
 	purchases, _, err := client.Marketplace.ListMarketplacePurchasesForUser(ctx, opt)
 	if err != nil {
@@ -222,7 +222,7 @@ func TestMarketplaceService_Stubbed_ListMarketplacePurchasesForUser(t *testing.T
 	})
 
 	opt := &ListOptions{Page: 1, PerPage: 2}
-	client.Marketplace.Stubbed = true
+	client.Marketplace.SetStubbed(true)
 	ctx := context.Background()
 	purchases, _, err := client.Marketplace.ListMarketplacePurchasesForUser(ctx, opt)
 	if err != nil {
diff --git a/github/github-interfaces.go b/github/github-interfaces.go
index 87f4bdaa04a..c4bf7d5295c 100644
--- a/github/github-interfaces.go
+++ b/github/github-interfaces.go
@@ -591,11 +591,15 @@ var _ LicensesServiceInterface = &LicensesService{}
 type MarketplaceServiceInterface interface {
 	GetPlanAccountForAccount(ctx context.Context, accountID int64) (*MarketplacePlanAccount, *Response, error)
 
+	GetStubbed() bool
+
 	ListMarketplacePurchasesForUser(ctx context.Context, opts *ListOptions) ([]*MarketplacePurchase, *Response, error)
 
 	ListPlanAccountsForPlan(ctx context.Context, planID int64, opts *ListOptions) ([]*MarketplacePlanAccount, *Response, error)
 
 	ListPlans(ctx context.Context, opts *ListOptions) ([]*MarketplacePlan, *Response, error)
+
+	SetStubbed(stubbed bool)
 }
 
 // MarketplaceService implements the MarketplaceServiceInterface.
diff --git a/github/github.go b/github/github.go
index 00121639a47..6ecf5d20a76 100644
--- a/github/github.go
+++ b/github/github.go
@@ -171,7 +171,7 @@ type Client struct {
 	IssueImport    IssueImportServiceInterface
 	Issues         IssuesServiceInterface
 	Licenses       LicensesServiceInterface
-	Marketplace    *MarketplaceService
+	Marketplace    MarketplaceServiceInterface
 	Migrations     MigrationServiceInterface
 	Organizations  OrganizationsServiceInterface
 	Projects       ProjectsServiceInterface