diff --git a/bashclub-zsync/DEBIAN/postinst b/bashclub-zsync/DEBIAN/postinst
index 177b9b0..90fb336 100755
--- a/bashclub-zsync/DEBIAN/postinst
+++ b/bashclub-zsync/DEBIAN/postinst
@@ -16,5 +16,9 @@ if [ -f /etc/logrotate.d/bashclub_zsync ]; then
   rm -f /etc/logrotate.d/bashclub_zsync
 fi
 
+if [ -f /etc/bashclub/zsync.conf ]; then
+  mv /etc/bashclub/zsync.conf.backup_$(date +%Y-%m-%d)
+fi
+
 chown root:root /etc/logrotate.d/bashclub-zsync
 chmod 644 /etc/logrotate.d/bashclub-zsync