diff --git a/draft/2025-07-30-this-week-in-rust.md b/draft/2025-07-30-this-week-in-rust.md
index 4828749d3..60453ab8c 100644
--- a/draft/2025-07-30-this-week-in-rust.md
+++ b/draft/2025-07-30-this-week-in-rust.md
@@ -43,6 +43,7 @@ and just ask the editors to select the category.
 ### Observations/Thoughts
 
 ### Rust Walkthroughs
+* [The Signal Protocol Explained #2: Implementing the Double Ratchet Algorithm in Rust](https://kerkour.com/signal-protocol-double-ratchet-rust)
 
 ### Research