diff --git a/build/build.xml b/build/build.xml
index f77635b586..bc83cc0953 100644
--- a/build/build.xml
+++ b/build/build.xml
@@ -45,7 +45,7 @@
 
 	<target name="composer">
 		<exec dir="./phpBB/"
-			command="php ../composer.phar install"
+			command="php ../composer.phar install --dev"
 			passthru="true" />
 	</target>