diff --git a/build.gradle b/build.gradle
index 7a08c5c..9d1ef00 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ plugins {
 }
 
 group = 'com.glencoesoftware'
-version = '0.4.1-SNAPSHOT'
+version = '0.5.0-rc1'
 
 mainClassName = 'com.glencoesoftware.bioformats2raw.Converter'
 sourceCompatibility = 1.8