diff --git a/debian/rules b/debian/rules
index 8e0c40c..161e70b 100755
--- a/debian/rules
+++ b/debian/rules
@@ -14,6 +14,7 @@
 # 2016-04-09: Although #626002 appears to be fixed jutils.jar is still required
 # on the CLASSPATH.
 export CLASSPATH=/usr/share/java/jinput.jar:/usr/share/java/jutils.jar
+export DEB_BUILD_MAINT_OPTIONS = hardening=+all
 
 %:
 	dh $@ --parallel --with javahelper