diff --git a/README.adoc b/README.adoc
index 5cbad609..4c143b5f 100644
--- a/README.adoc
+++ b/README.adoc
@@ -271,4 +271,4 @@ If you need to add `ignoredClassPatterns` or `ignoredResourcePatterns` to your s
 [[contributing]]
 = Contributing
 
-Unresolved directive in <stdin> - include::https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/docs/src/main/asciidoc/contributing.adoc[]
+Unresolved directive in <stdin> - include::https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/main/docs/src/main/asciidoc/contributing.adoc[]