diff --git a/pom.xml b/pom.xml
index 93b4a8ea..4b217340 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>org.jruby.joni</groupId>
   <artifactId>joni</artifactId>
   <packaging>jar</packaging>
-  <version>2.1.8</version>
+  <version>2.1.9-SNAPSHOT</version>
   <name>Joni</name>
   <description>
     Java port of Oniguruma: http://www.geocities.jp/kosako3/oniguruma