diff --git a/tutorials/useful_regex.ipynb b/tutorials/useful_regex.ipynb
index 4918422..14a9594 100644
--- a/tutorials/useful_regex.ipynb
+++ b/tutorials/useful_regex.ipynb
@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:95c2fd6c2ae1aca2d5dd07df567ff9d9ca66d642afe68338cc4e18e61798958f"
+  "signature": "sha256:2e496899fa42e9e6ec0548cb798a7ca3f66221e0e43f94315ad4cbfed2e8fd54"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -101,7 +101,7 @@
       "- [Username validation](#Username-validation)\n",
       "- [Checking for valid email addresses](#Checking-for-valid-email-addresses)\n",
       "- [Check for a valid URL](#Check-for-a-valid-URL)\n",
-      "- [Checking for integers](#Checking-for-integers)\n",
+      "- [Checking for numbers](#Checking-for-numbers)\n",
       "- [Validating dates](#Validating-dates)\n",
       "- [Time](#Time)\n",
       "- [Checking for HTML tags](#Checking-for-HTML-tags)"
@@ -499,7 +499,7 @@
      "level": 2,
      "metadata": {},
      "source": [
-      "Checking for integers"
+      "Checking for numbers"
      ]
     },
     {