diff --git a/__concurrent/surelock-demo/README.md b/__concurrent/surelock-demo/README.md
index 926c65a..decbfc8 100644
--- a/__concurrent/surelock-demo/README.md
+++ b/__concurrent/surelock-demo/README.md
@@ -1,5 +1,5 @@
 surelock
 
-> https://notes.brooklynzelenka.com/Blog/Surelock
+> https://crates.io/crates/surelock