diff --git a/types/stripe/index.d.ts b/types/stripe/index.d.ts
index 1f5ac99223..21a444058c 100644
--- a/types/stripe/index.d.ts
+++ b/types/stripe/index.d.ts
@@ -5,6 +5,7 @@
 //                 Sampson Oliver <https://github.com/sampsonjoliver>
 //                 Linus Unnebäck <https://github.com/LinusU>
 //                 Brannon Jones <https://github.com/brannon>
+//                 Kyle Kamperschroer <https://github.com/kkamperschroer>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference types="node" />
@@ -735,7 +736,7 @@ declare namespace Stripe {
              * The application fee (if any) for the charge. See the Connect documentation
              * for details. [Expandable]
              */
-            application_fee?: string;
+            application_fee?: string | applicationFees.IApplicationFee;
 
             /**
              * ID of the balance transaction that describes the impact of this charge on
@@ -4258,7 +4259,10 @@ declare namespace Stripe {
              */
             current_period_start: number;
 
-            customer: string;
+            /**
+             * ID of the customer who owns the subscription. [Expandable]
+             */
+            customer: string | customers.ICustomer;
 
             /**
              * Describes the current discount applied to this subscription, if there is one. When billing, a discount applied to a
diff --git a/types/stripe/stripe-tests.ts b/types/stripe/stripe-tests.ts
index f0687aa9f1..0df4ec257c 100644
--- a/types/stripe/stripe-tests.ts
+++ b/types/stripe/stripe-tests.ts
@@ -82,9 +82,15 @@ stripe.charges.create({
 
 stripe.charges.retrieve("ch_15fvyXEe31JkLCeQOo0SwFk9", function (err, charge) {
     // asynchronously called
+    if (typeof charge.application_fee === "object") {
+        charge.application_fee.amount;
+    }
 });
 stripe.charges.retrieve("ch_15fvyXEe31JkLCeQOo0SwFk9").then(function (charge) {
     // asynchronously called
+    if (typeof charge.application_fee === "object") {
+        charge.application_fee.amount;
+    }
 });
 
 stripe.charges.update(
@@ -1083,9 +1089,15 @@ stripe.subscriptions.create({ plan: "platypi-dev", customer: "cus_5rfJKDJkuxzh5Q
 
 stripe.subscriptions.retrieve("sub_8QwCiwZ9tmMSpt", function(err, subscription) {
     // asynchronously called
+    if (typeof subscription.customer === "object") {
+        subscription.customer.email;
+    }
 });
 stripe.subscriptions.retrieve("sub_8QwCiwZ9tmMSpt").then(function(subscription) {
     // asynchronously called
+    if (typeof subscription.customer === "object") {
+        subscription.customer.email;
+    }
 });
 
 stripe.subscriptions.update("sub_8QwCiwZ9tmMSpt", { plan: "platypi" }, function(err, subscription) {