diff --git a/1-Introduction/01-defining-data-science/README.md b/1-Introduction/01-defining-data-science/README.md
index c08b08dc..716d0f94 100644
--- a/1-Introduction/01-defining-data-science/README.md
+++ b/1-Introduction/01-defining-data-science/README.md
@@ -153,7 +153,7 @@ Visit [`notebook.ipynb`](/1-Introduction/01-defining-data-science/notebook.ipynb
 
 
 
-## [Post-lecture quiz](https://purple-hill-04aebfb03.1.azurestaticapps.net/quiz/1)
+## [Post-lecture quiz](https://ff-quizzes.netlify.app/en/ds/)
 
 ## Assignments