diff --git a/content/Building Systems with the ChatGPT API/4.Chain of Thought Reasoning.ipynb b/content/Building Systems with the ChatGPT API/5.Chain of Thought Reasoning.ipynb
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diff --git a/content/Building Systems with the ChatGPT API/5.Chaining Prompts.ipynb b/content/Building Systems with the ChatGPT API/6.Chaining Prompts.ipynb
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rename from content/Building Systems with the ChatGPT API/5.Chaining Prompts.ipynb
rename to content/Building Systems with the ChatGPT API/6.Chaining Prompts.ipynb