diff --git a/README.md b/README.md
index ce5cb67..484e27d 100644
--- a/README.md
+++ b/README.md
@@ -70,6 +70,7 @@ A table containing post data for it's booru.
 - id - Post ID
 - image - Media ID (referencing media table)
 - thumb - Thumbnail ID (referencing thumb table)
+- purity - A single character describing the purity of the post
 - update - Last time the post entry was updated/tagged
 
 ##### Booru_[id]_tags