diff --git a/jsprit-io/pom.xml b/jsprit-io/pom.xml
index 5daa85c4..74cca11e 100644
--- a/jsprit-io/pom.xml
+++ b/jsprit-io/pom.xml
@@ -10,6 +10,7 @@
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>jsprit-io</artifactId>
+    <packaging>jar</packaging>
 
     <build>
         <pluginManagement>