diff --git a/lib/Connection.js b/lib/Connection.js
index 619862ff..8a6a290c 100644
--- a/lib/Connection.js
+++ b/lib/Connection.js
@@ -338,7 +338,7 @@ Connection.prototype.append = function(data, options, cb) {
     if (!isDate(options.date))
       throw new Error('`date` is not a Date object');
     cmd += ' "';
-    cmd += options.date.getDate();
+    cmd += ('0' + options.date.getDate()).slice(-2);
     cmd += '-';
     cmd += MONTHS[options.date.getMonth()];
     cmd += '-';