diff --git a/doc/source/development/notebooks/processor_examples/regex.ipynb b/doc/source/development/notebooks/processor_examples/regex.ipynb
index 92ce69797..80b2b1a0c 100644
--- a/doc/source/development/notebooks/processor_examples/regex.ipynb
+++ b/doc/source/development/notebooks/processor_examples/regex.ipynb
@@ -20,7 +20,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -87,25 +87,9 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stderr",
-     "output_type": "stream",
-     "text": [
-      "[Deprecated]: regex_fields are no longer necessary. Use Lucene regex annotation.\n"
-     ]
-    },
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "before: {'data_stream': {'dataset': 'windows', 'namespace': 'devopslab', 'type': '/logs/'}, '_op_type': 'create'}\n",
-      "after: {'data_stream': {'dataset': 'windows', 'namespace': 'devopslab', 'type': '/logs/'}, '_op_type': 'create', '_index': '/logs/-windows-devopslab'}\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "rule_yaml = \"\"\"---\n",
     "filter: 'data_stream.type: \".*lo.*\"'\n",
@@ -134,18 +118,9 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "before: {'data_stream': {'dataset': 'windows', 'namespace': 'devopslab', 'type': '/logs/'}, '_op_type': 'create'}\n",
-      "after: {'data_stream': {'dataset': 'windows', 'namespace': 'devopslab', 'type': '/logs/'}, '_op_type': 'create', '_index': '/logs/-windows-devopslab'}\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "rule_yaml = \"\"\"---\n",
     "filter: 'data_stream.type: /.*log.*/'    \n",
@@ -171,18 +146,9 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "before: {'data_stream': {'dataset': 'windows', 'namespace': 'devopslab', 'type': '/logs/'}, '_op_type': 'create'}\n",
-      "after: {'data_stream': {'dataset': 'windows', 'namespace': 'devopslab', 'type': '/logs/'}, '_op_type': 'create', '_index': '/logs/-windows-devopslab'}\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "rule_yaml = \"\"\"---\n",
     "filter: 'data_stream.type: /\\\\/lo.*/'    \n",