diff --git a/gr9-treeSeeder-modify.md b/gr9-treeSeeder-modify.md
index d547e55d..3702361a 100644
--- a/gr9-treeSeeder-modify.md
+++ b/gr9-treeSeeder-modify.md
@@ -132,7 +132,7 @@ Tips
 4. After each change, you will need to ``|Download|`` the updated code to your micro:bit.
 
 ## Modify Step 1
-Think back to the lesson or [watch this video](https://youtu.be/Iati2Yg7uYs?feature=shared). 
+Think back to the lesson or [watch this video](https://youtu.be/KpPWcFukGIM?feature=shared). 
 
 What should an automated tree seeder be able to do?
 
diff --git a/gr9-treeSeeder-use.md b/gr9-treeSeeder-use.md
index c4c2fa4e..41182b22 100644
--- a/gr9-treeSeeder-use.md
+++ b/gr9-treeSeeder-use.md
@@ -117,7 +117,7 @@ Tips
 3. If you need help with the code, click the lightbulb!
 
 ## Use Step 1
-Think back to the lesson or [watch this video](https://youtu.be/Iati2Yg7uYs?feature=shared). 
+Think back to the lesson or [watch this video](https://youtu.be/KpPWcFukGIM?feature=shared). 
 
 What should an automated tree seeder be able to do?