diff --git a/contents/1.1.3.5-understanding-roles-and-titles.md b/contents/1.1.3.5-understanding-roles-and-titles.md
index f35218e..29e5768 100644
--- a/contents/1.1.3.5-understanding-roles-and-titles.md
+++ b/contents/1.1.3.5-understanding-roles-and-titles.md
@@ -17,11 +17,11 @@ _In this book, I use the term “machine learning engineer” as an umbrella ter
 
 > 🌊 **Resources** 🌊
 - [What machine learning role is right for you?](https://www.youtube.com/watch?v=mO0CoRQ7Iuo) by Josh Tobin, Full Stack Deep Learning Bootcamp 2019.
-- [Data science is different now](https://veekaybee.github.io/2019/02/13/data-science-is-different/) by Vicki Boykis, 2019.
+- [Data science is different now](https://vickiboykis.com/2019/02/13/data-science-is-different-now/) by Vicki Boykis, 2019.
 - [The two sides of Getting a Job as a Data Scientist](https://www.kdnuggets.com/2018/03/two-sides-getting-job-data-scientist.html) by Favio Vázquez, 2018.
 - [Goals and different roles in the Data Science platform at Netflix](https://docs.google.com/document/d/1bC70WBJVigOICTx2Pm1xpkWnW8GVuNTLsUqawclPRhM/edit) by Julie Pitt, live doc.
 - [Unpopular Opinion - Data Scientists Should Be More End-to-End](https://eugeneyan.com/writing/end-to-end-data-science/ ) by Eugene Yan, 2020.
 
 
 [^13]:
-     [What’s in a name? The semantics of Science at Lyft](https://medium.com/@chamandy/whats-in-a-name-ce42f419d16c) by Nicholas Chamandy (Lyft Engineering blog, 2018)
\ No newline at end of file
+     [What’s in a name? The semantics of Science at Lyft](https://medium.com/@chamandy/whats-in-a-name-ce42f419d16c) by Nicholas Chamandy (Lyft Engineering blog, 2018)