diff --git a/misc/prompt_caching.ipynb b/misc/prompt_caching.ipynb
index cfc5334..5c15883 100644
--- a/misc/prompt_caching.ipynb
+++ b/misc/prompt_caching.ipynb
@@ -165,7 +165,6 @@
     "                {\n",
     "                    \"type\": \"text\",\n",
     "                    \"text\": \"<book>\" + book_content + \"</book>\",\n",
-    "                    \"cache_control\": {\"type\": \"ephemeral\"}\n",
     "                },\n",
     "                {\n",
     "                    \"type\": \"text\",\n",
@@ -180,7 +179,6 @@
     "        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",