diff --git a/src/main.js b/src/main.js
index 39a3f6e..d1ee9dc 100644
--- a/src/main.js
+++ b/src/main.js
@@ -4,4 +4,8 @@
 
 export function subtract(a, b) {
   return a - b;
-}
\ No newline at end of file
+}
+
+export function multiply(a, b) {
+  return a * b;
+}
diff --git a/src/main.test.js b/src/main.test.js
index 030a3e6..653b7b7 100644
--- a/src/main.test.js
+++ b/src/main.test.js
@@ -1,4 +1,4 @@
-import { add, subtract } from "./main";
+import { add, multiply, subtract } from "./main";
 import { expect } from "@esm-bundle/chai";
 
 describe("main tests", () => {
@@ -13,4 +13,8 @@
   it("subtracts two number", () => {
     expect(subtract(5, 3)).to.equal(2);
   });
+
+  it("multiplies two number", () => {
+    expect(multiply(5, 3)).to.equal(15);
+  });
 });