diff --git a/ecs/README.md b/ecs/README.md
index 95db2051..916454c4 100644
--- a/ecs/README.md
+++ b/ecs/README.md
@@ -15,7 +15,7 @@
 
 Under heavy development, not ready for use!
 
-As development continues, we're publishing a blog series ["Let's build an Entity Component System from scatch"](https://devlog.hexops.com/categories/lets-build-an-ecs).
+As development continues, we're publishing a blog series ["Let's build an Entity Component System from scatch"](https://devlog.hexops.com/categories/build-an-ecs/).
 
 Join us in developing it, give us advice, etc. [on Matrix chat](https://matrix.to/#/#ecs:matrix.org) or [follow updates on Twitter](https://twitter.com/machengine).