diff --git a/src/ant/defs.xml b/src/ant/defs.xml
index 5d150ee9..7839b302 100644
--- a/src/ant/defs.xml
+++ b/src/ant/defs.xml
@@ -32,7 +32,7 @@
 <property name="repository.revision" value=""/>
 
 
-<property name="Drop-seq.version" value="2.5.1"/>
+<property name="Drop-seq.version" value="2.5.2"/>
 <property name="zip.label" value="Drop-seq_tools-${Drop-seq.version}"/>
 <property name="javac.debug" value="true"/>
 <property name="javac.target" value="1.8"/>