1 files changed, 1 insertions, 1 deletions
diff --git a/lib/fs/index.js b/lib/fs/index.js
index 4fd63e9..3e0d711 100644
--- a/lib/fs/index.js
+++ b/lib/fs/index.js
@@ -51,7 +51,7 @@ FS.prototype.readdir = function(folder) {
 
 // Allocate a new temporary directory
 FS.prototype.tmpdir = function() {
-    return path.resolve(os.tmpdir(), _.uniqueId('gitbook_tmp_'));
+    return path.resolve(os.tmpdir(), 'gitbook_tmp_'+Date.now());
 };
 
 // List files in a directory