diff --git a/README.adoc b/README.adoc
index 3662a6a59b..28cec9324f 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1,5 +1,6 @@
+:spring_version: 4.0.0.RC1
 :spring_boot_version: 0.5.0.M6
-:Component: http://docs.spring.io/spring/docs/4.0.0.RC1/javadoc-api/org/springframework/stereotype/Component.html
+:Component: http://docs.spring.io/spring/docs/{spring_version}/javadoc-api/org/springframework/stereotype/Component.html
 :EnableAutoConfiguration: http://docs.spring.io/spring-boot/docs/{spring_boot_version}/api/org/springframework/boot/autoconfigure/EnableAutoConfiguration.html
 :SpringApplication: http://docs.spring.io/spring-boot/docs/{spring_boot_version}/api/org/springframework/boot/SpringApplication.html
 :toc: