diff --git a/antora-playbook.yml b/antora-playbook.yml
index 8d1fe791..af69e6ba 100644
--- a/antora-playbook.yml
+++ b/antora-playbook.yml
@@ -30,7 +30,7 @@ git:
 content:
   sources:
   - url: https://github.com/spring-projects/spring-session
-    branches: [main, '{0..9}+.{0..9}+.x', '!(1.*.x)', '!(2.{0..5}.x)']
+    branches: [main, '+({0..9}).+({0..9}).x', '!(1.*.x)', '!(2.{0..5}.x)']
     tags: ['2.{6..9}.*', '3.+({0..9}).+({0..9})?(-{RC,M}*)?', '!2.6.0-M*','!2.6.0-RC*','!2.7.0-M1','!3.0.0-M1']
     start_path: spring-session-docs
 asciidoc: