diff --git a/walkthrough.ipynb b/walkthrough.ipynb
index 5d692c8458a3f0a27be1b9f13a95643c06198d30..700f577c818e319479c9de8d88c0b5e7af59a879 100644
--- a/walkthrough.ipynb
+++ b/walkthrough.ipynb
@@ -106,7 +106,7 @@
     "from decision_layer.encoders import OpenAIEncoder\n",
     "import os\n",
     "\n",
-    "os.environ[\"OPENAI_API_KEY\"] = \"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\"\n",
+    "os.environ[\"OPENAI_API_KEY\"] = \"sk-...\"\n",
     "encoder = OpenAIEncoder(name=\"text-embedding-ada-002\")"
    ]
   },