diff --git a/book/exercises/005a.md b/book/exercises/005a.md
index 355e9e2..06dcb19 100644
--- a/book/exercises/005a.md
+++ b/book/exercises/005a.md
@@ -22,7 +22,7 @@ Can you include a page from someone else’s book into your own using `external:
      * Copy the raw link in this format:
 
        ```yaml
-       - external: https://github.com/TeachBooks/manual/blob/v1.1.1/book/examples/book_structure.md
+       - external: https://github.com/TeachBooks/manual/blob/release/book/examples/book_structure.md
        ```
 
 2. Add the `external:` link into the `parts:` or `chapters:` section of your `_toc.yml` file.
@@ -39,7 +39,7 @@ Can you include a page from someone else’s book into your own using `external:
 
   chapters:
     - file: 001
-    - external: https://github.com/TeachBooks/manual/blob/v1.1.1/book/examples/book_structure.md
+    - external: https://github.com/TeachBooks/manual/blob/release/book/examples/book_structure.md
     - file: 003
   ```
 ````