diff --git a/package.json b/package.json
index 29cd1e0..47dff41 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "license": "GPL-3.0",
   "devDependencies": {
     "@mate-academy/eslint-config": "*",
-    "@mate-academy/scripts": "^0.3.5",
+    "@mate-academy/scripts": "^0.6.5",
     "eslint": "^5.16.0",
     "eslint-plugin-jest": "^22.4.1",
     "eslint-plugin-node": "^8.0.1",
diff --git a/src/deepEqual.js b/src/deepEqual.js
index 860208b..76456f9 100644
--- a/src/deepEqual.js
+++ b/src/deepEqual.js
@@ -21,6 +21,28 @@
  */
 function deepEqual(a, b) {
   // write code here
+  if (a === b) {
+    return true;
+  } else if ((typeof a === 'object' && a !== null)
+    && (typeof b === 'object' && b !== null)) {
+    if (Object.keys(a).length !== Object.keys(b).length) {
+      return false;
+    }
+
+    for (const prop in a) {
+      if (b.hasOwnProperty(prop)) {
+        if (!deepEqual(a[prop], b[prop])) {
+          return false;
+        }
+      } else {
+        return false;
+      }
+    }
+
+    return true;
+  } else {
+    return false;
+  }
 }
 
 module.exports = deepEqual;