diff --git a/src/library/entry.cr b/src/library/entry.cr
index bb0aa1b..5694551 100644
--- a/src/library/entry.cr
+++ b/src/library/entry.cr
@@ -1,4 +1,5 @@
 require "image_size"
+require "yaml"
 
 class Entry
   include YAML::Serializable