diff --git a/chapter6/5_web_sockets_and_http_requests/1_http_requests/domController.js b/chapter6/5_web_sockets_and_http_requests/1_http_requests/domController.js
index 1448259..de659f7 100644
--- a/chapter6/5_web_sockets_and_http_requests/1_http_requests/domController.js
+++ b/chapter6/5_web_sockets_and_http_requests/1_http_requests/domController.js
@@ -28,12 +28,12 @@ const updateItemList = inventory => {
   window.document.body.appendChild(p);
 };
 
-const handleAddItem = event => {
+const handleAddItem = async event => {
   // Prevent the page from reloading as it would by default
   event.preventDefault();
 
   const { name, quantity } = event.target.elements;
-  addItem(name.value, parseInt(quantity.value, 10));
+  await addItem(name.value, parseInt(quantity.value, 10));
 
   history.pushState({ inventory: { ...data.inventory } }, document.title);
 
diff --git a/chapter6/5_web_sockets_and_http_requests/1_http_requests/inventoryController.js b/chapter6/5_web_sockets_and_http_requests/1_http_requests/inventoryController.js
index f7442c1..63962e3 100644
--- a/chapter6/5_web_sockets_and_http_requests/1_http_requests/inventoryController.js
+++ b/chapter6/5_web_sockets_and_http_requests/1_http_requests/inventoryController.js
@@ -1,12 +1,12 @@
 const data = { inventory: {} };
 
-const API_ADDR = "http://localhost:3000";
+const API_ADDR = "http://127.0.0.1:3000";
 
-const addItem = (itemName, quantity) => {
+const addItem = async (itemName, quantity) => {
   const currentQuantity = data.inventory[itemName] || 0;
   data.inventory[itemName] = currentQuantity + quantity;
 
-  fetch(`${API_ADDR}/inventory/${itemName}`, {
+  await fetch(`${API_ADDR}/inventory/${itemName}`, {
     method: "POST",
     headers: { "Content-Type": "application/json" },
     body: JSON.stringify({ quantity })
diff --git a/chapter6/5_web_sockets_and_http_requests/1_http_requests/inventoryController.test.js b/chapter6/5_web_sockets_and_http_requests/1_http_requests/inventoryController.test.js
index dc36553..78cf0c2 100644
--- a/chapter6/5_web_sockets_and_http_requests/1_http_requests/inventoryController.test.js
+++ b/chapter6/5_web_sockets_and_http_requests/1_http_requests/inventoryController.test.js
@@ -1,7 +1,7 @@
 const nock = require("nock");
 const { API_ADDR, addItem, data } = require("./inventoryController");
 
-describe("addItem", () => {
+describe("addItem", async () => {
   test("adding new items to the inventory", () => {
     // Respond to all post requests
     // to POST /inventory/:itemName
@@ -9,16 +9,16 @@ describe("addItem", () => {
       .post(/inventory\/.*$/)
       .reply(200);
 
-    addItem("cheesecake", 5);
+    await addItem("cheesecake", 5);
     expect(data.inventory.cheesecake).toBe(5);
   });
 
-  test("sending requests when adding new items", () => {
+  test("sending requests when adding new items", async () => {
     nock(API_ADDR)
       .post("/inventory/cheesecake", JSON.stringify({ quantity: 5 }))
       .reply(200);
 
-    addItem("cheesecake", 5);
+    await addItem("cheesecake", 5);
 
     if (!nock.isDone())
       throw new Error("POST /inventory/cheesecake was not reached");
diff --git a/chapter6/5_web_sockets_and_http_requests/1_http_requests/main.test.js b/chapter6/5_web_sockets_and_http_requests/1_http_requests/main.test.js
index b62bbbe..665280a 100644
--- a/chapter6/5_web_sockets_and_http_requests/1_http_requests/main.test.js
+++ b/chapter6/5_web_sockets_and_http_requests/1_http_requests/main.test.js
@@ -60,6 +60,8 @@ test("persists items between sessions", async () => {
 
   fireEvent.click(submitBtn);
 
+  await screen.findByText("cheesecake - Quantity: 6");
+
   const itemListBefore = document.getElementById("item-list");
   expect(itemListBefore.childNodes).toHaveLength(1);
   expect(
@@ -80,7 +82,7 @@ test("persists items between sessions", async () => {
 });
 
 describe("adding items", () => {
-  test("updating the item list", () => {
+  test("updating the item list", async () => {
     nock(API_ADDR)
       .post(/inventory\/.*$/)
       .reply(200);
@@ -97,11 +99,13 @@ describe("adding items", () => {
 
     fireEvent.click(submitBtn);
 
+    await screen.findByText("cheesecake - Quantity: 6");
+
     const itemList = document.getElementById("item-list");
     expect(getByText(itemList, "cheesecake - Quantity: 6")).toBeInTheDocument();
   });
 
-  test("sending a request to update the item list", () => {
+  test("sending a request to update the item list", async () => {
     nock(API_ADDR)
       .post("/inventory/cheesecake", JSON.stringify({ quantity: 6 }))
       .reply(200);
@@ -117,12 +121,13 @@ describe("adding items", () => {
     fireEvent.input(quantityField, { target: { value: "6" }, bubbles: true });
 
     fireEvent.click(submitBtn);
+    await screen.findByText("cheesecake - Quantity: 6");
 
     if (!nock.isDone())
       throw new Error("POST /inventory/cheesecake was not reached");
   });
 
-  test("undo to one item", done => {
+  test("undo to one item", async () => {
     // You must specify the encoded URL here because
     // nock struggles with encoded urls
     nock(API_ADDR)
@@ -143,6 +148,8 @@ describe("adding items", () => {
     });
     fireEvent.input(quantityField, { target: { value: "6" }, bubbles: true });
     fireEvent.click(submitBtn);
+    
+    await screen.findByText("cheesecake - Quantity: 6");
 
     fireEvent.input(itemField, {
       target: { value: "carrot cake" },
@@ -151,19 +158,20 @@ describe("adding items", () => {
     fireEvent.input(quantityField, { target: { value: "5" }, bubbles: true });
     fireEvent.click(submitBtn);
 
+    await screen.findByText("carrot cake - Quantity: 5");
+
     window.addEventListener("popstate", () => {
       const itemList = document.getElementById("item-list");
       expect(itemList.children).toHaveLength(1);
       expect(
         getByText(itemList, "cheesecake - Quantity: 6")
       ).toBeInTheDocument();
-      done();
     });
 
     fireEvent.click(screen.getByText("Undo"));
   });
 
-  test("undo to empty list", done => {
+  test("undo to empty list", async () => {
     nock(API_ADDR)
       .post(/inventory\/.*$/)
       .reply(200);
@@ -179,13 +187,14 @@ describe("adding items", () => {
     fireEvent.input(quantityField, { target: { value: "6" }, bubbles: true });
 
     fireEvent.click(submitBtn);
+    
+    await screen.findByText("cheesecake - Quantity: 6");
 
     expect(history.state).toEqual({ inventory: { cheesecake: 6 } });
 
     window.addEventListener("popstate", () => {
       const itemList = document.getElementById("item-list");
       expect(itemList).toBeEmpty();
-      done();
     });
 
     fireEvent.click(screen.getByText("Undo"));