diff --git a/build.xml b/build.xml
index b361584ed6..1c39959fae 100644
--- a/build.xml
+++ b/build.xml
@@ -36,8 +36,8 @@ under the License.
 
     <description>The Apache POI project Ant build.</description>
 
-    <property name="version.id" value="3.14"/>
-    <property name="version.rel" value="REL_3_14_FINAL"/>
+    <property name="version.id" value="3.15-beta1"/>
+    <property name="version.rel" value="REL_3_15_BETA1"/>
 
     <property environment="env"/>
     <!-- the repository to download jars from -->