diff --git a/pom.xml b/pom.xml
index 990032b..d83006f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>kangaroo-and-rabbit</groupId>
 	<artifactId>archidata</artifactId>
-	<version>0.21.0</version>
+	<version>0.21.1-SNAPSHOT</version>
 	<properties>
 		<java.version>21</java.version>
 		<maven.compiler.version>3.1</maven.compiler.version>
diff --git a/version.txt b/version.txt
index 8854156..ec7324b 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-0.21.0
+0.21.1-dev