diff --git a/debian/postinst b/debian/postinst
new file mode 100644
index 0000000..a97f1fe
--- /dev/null
+++ b/debian/postinst
@@ -0,0 +1,23 @@
+#! /bin/sh
+set -e
+
+case "$1" in
+  configure)
+      chmod 600 /etc/publik/publik.conf.example
+  ;;
+
+  triggered)
+  ;;
+
+  abort-upgrade|abort-remove|abort-deconfigure)
+  ;;
+
+  *)
+    echo "postinst called with unknown argument \`$1'" >&2
+    exit 1
+  ;;
+esac
+
+#DEBHELPER#
+
+exit 0