diff --git a/misc/prompt_caching.ipynb b/misc/prompt_caching.ipynb
index f14867b6..75668e0a 100644
--- a/misc/prompt_caching.ipynb
+++ b/misc/prompt_caching.ipynb
@@ -180,7 +180,6 @@
     "        model=MODEL_NAME,\n",
     "        max_tokens=300,\n",
     "        messages=messages,\n",
-    "        extra_headers={\"anthropic-beta\": \"prompt-caching-2024-07-31\"}\n",
     "\n",
     "    )\n",
     "    end_time = time.time()\n",
@@ -250,7 +249,6 @@
     "        model=MODEL_NAME,\n",
     "        max_tokens=300,\n",
     "        messages=messages,\n",
-    "        extra_headers={\"anthropic-beta\": \"prompt-caching-2024-07-31\"}\n",
     "    )\n",
     "    end_time = time.time()\n",
     "\n",
@@ -458,9 +456,6 @@
     "        # Make an API call to the assistant\n",
     "        response = client.messages.create(\n",
     "            model=MODEL_NAME,\n",
-    "            extra_headers={\n",
-    "              \"anthropic-beta\": \"prompt-caching-2024-07-31\"\n",
-    "            },\n",
     "            max_tokens=300,\n",
     "            system=[\n",
     "                {\"type\": \"text\", \"text\": system_message, \"cache_control\": {\"type\": \"ephemeral\"}},\n",