diff --git a/docs/antora.yml b/docs/antora.yml
index 718dbd4..a34482e 100644
--- a/docs/antora.yml
+++ b/docs/antora.yml
@@ -1,5 +1,5 @@
 name: gradle
 title: oap-gradle
-version: master
+version: 2021.3
 nav:
 - modules/ROOT/nav.adoc