diff --git a/pkg/database/migrations/007_additional_tag_types.sql b/pkg/database/migrations/007_additional_tag_types.sql
new file mode 100644
index 0000000..088af3a
--- /dev/null
+++ b/pkg/database/migrations/007_additional_tag_types.sql
@@ -0,0 +1,4 @@
+-- +migrate Up
+
+INSERT INTO tag_types (name) VALUES ('Contributor');
+INSERT INTO tag_types (name) VALUES ('Unknown');
diff --git a/pkg/models/const.go b/pkg/models/const.go
index abf13d9..18d5df9 100644
--- a/pkg/models/const.go
+++ b/pkg/models/const.go
@@ -44,14 +44,16 @@ const (
 )
 
 const (
-	General   TagType = "general"
-	Species   TagType = "species"
-	Character TagType = "character"
-	Artist    TagType = "artist"
-	Lore      TagType = "lore"
-	Meta      TagType = "meta"
-	Invalid   TagType = "invalid"
-	Copyright TagType = "copyright"
+	General        TagType = "general"
+	Species        TagType = "species"
+	Character      TagType = "character"
+	Artist         TagType = "artist"
+	Lore           TagType = "lore"
+	Meta           TagType = "meta"
+	Invalid        TagType = "invalid"
+	Copyright      TagType = "copyright"
+	Contributor    TagType = "Contributor"
+	UnknownTagType TagType = "Unknown"
 )
 
 const (