diff --git a/parent/pom.xml b/parent/pom.xml
index 48a733df..1f5613a4 100644
--- a/parent/pom.xml
+++ b/parent/pom.xml
@@ -135,7 +135,7 @@
 		<javax-annotation-api>1.3.2</javax-annotation-api>
 
 		<!-- Used in asciidoc reference documentation -->
-		<releasetrain>2021.0.3</releasetrain>
+		<releasetrain>2021.0.4-SNAPSHOT</releasetrain>
 
 		<!-- To be overridden by individual modules -->
 		<java-module-name/>