diff --git a/spring-5-webflux/README.md b/spring-5-webflux/README.md
index 1613358b59..84c3d5a4ca 100644
--- a/spring-5-webflux/README.md
+++ b/spring-5-webflux/README.md
@@ -1,3 +1,4 @@
 ## Relevant articles:
 
 - [Spring Boot Reactor Netty Configuration](https://www.baeldung.com/spring-boot-reactor-netty)
+- [How to Return 404 with Spring WebFlux](https://www.baeldung.com/spring-webflux-404)