diff --git a/build.gradle b/build.gradle
index ceb3ac57..690f62fc 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ plugins {
 }
 
 group = "org.openmicroscopy"
-version = "5.9.0"
+version = "5.9.1-SNAPSHOT"
 
 repositories {
     mavenLocal()