diff --git a/tutorials/useful_regex.ipynb b/tutorials/useful_regex.ipynb
index 91e7dc7..4918422 100644
--- a/tutorials/useful_regex.ipynb
+++ b/tutorials/useful_regex.ipynb
@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:8f1ee7a7bfaeca0ee3e12b2387445faa10632d57277d59af6dbfdca9732e5910"
+  "signature": "sha256:95c2fd6c2ae1aca2d5dd07df567ff9d9ca66d642afe68338cc4e18e61798958f"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -103,7 +103,8 @@
       "- [Check for a valid URL](#Check-for-a-valid-URL)\n",
       "- [Checking for integers](#Checking-for-integers)\n",
       "- [Validating dates](#Validating-dates)\n",
-      "- [Time](#Time)"
+      "- [Time](#Time)\n",
+      "- [Checking for HTML tags](#Checking-for-HTML-tags)"
      ]
     },
     {