diff --git a/ARCHITECTURE.md b/ARCHITECTURE.md
index fcb9c1b..cf525dc 100644
--- a/ARCHITECTURE.md
+++ b/ARCHITECTURE.md
@@ -163,4 +163,4 @@ def example_history(self):
     ...
 ```
 
-[exchange]: https://github.com/squareup/exchange
+[exchange]: https://github.com/square/exchange