diff --git a/polkadot/roadmap/implementers-guide/book.toml b/polkadot/roadmap/implementers-guide/book.toml
index 1e6680f6f4b7e..f677c0d59c049 100644
--- a/polkadot/roadmap/implementers-guide/book.toml
+++ b/polkadot/roadmap/implementers-guide/book.toml
@@ -17,6 +17,6 @@ renderer = ["html"]
 additional-css = ["last-changed.css"]
 additional-js = ["mermaid.min.js", "mermaid-init.js"]
 # Repository URL used in the last-changed link.
-git-repository-url = "https://github.com/paritytech/polkadot"
+git-repository-url = "https://github.com/paritytech/polkadot-sdk"
 
 [output.linkcheck]