diff --git a/lib/musicbrainz.rb b/lib/musicbrainz.rb
index c67e719..bb6cde0 100644
--- a/lib/musicbrainz.rb
+++ b/lib/musicbrainz.rb
@@ -1,5 +1,6 @@
 require "digest/sha1"
 require "fileutils"
+require "date"
 
 require "faraday"
 require "nokogiri"