diff --git a/07-transformers/README.md b/07-transformers/README.md
index 14b77ab..b683065 100644
--- a/07-transformers/README.md
+++ b/07-transformers/README.md
@@ -15,7 +15,7 @@
 
 - 📚 [Watch an A.I. Learn to Write by Reading Nothing but **\_\_\_\_**](https://www.nytimes.com/interactive/2023/04/26/upshot/gpt-from-scratch.html) by Aatish Bhatia
 - 📚 [Attention is All You Need](https://arxiv.org/abs/1706.03762) - Original "Transformer" paper from 2017, also [Neural Machine Translation by Jointly Learning to Align and Translate](https://arxiv.org/abs/1409.0473) -- Attention paper from 2014
-- 📚 [What Are Transformer Models and How Do They Work?](https://docs.cohere.com/docs/transformer-models)
+- 📚 [What Are Transformer Models and How Do They Work?](https://cohere.com/llmu/what-are-transformer-models)
 - 🎥 [How large language models work, a visual intro to transformers](https://youtu.be/wjZofJX0v4M) by 3Blue1Brown
 - 🎥 [Intro to Large Language Models](https://youtu.be/zjkBMFhNj_g) by Andrej Karpathy and [Intro to LLMs slides](https://drive.google.com/file/d/1pxx_ZI7O-Nwl7ZLNk5hI3WzAsTLwvNU7/view)
 - 📖 [Language Models Can Only Write Ransom Notes](https://posts.decontextualize.com/language-models-ransom-notes/) by Allison Parrish