diff --git a/src/Jackett.Common/Definitions/marinetracker.yml b/src/Jackett.Common/Definitions/marinetracker.yml
index b4714da83..718d5e55d 100644
--- a/src/Jackett.Common/Definitions/marinetracker.yml
+++ b/src/Jackett.Common/Definitions/marinetracker.yml
@@ -119,6 +119,7 @@ caps:
     - {id: 280, cat: Books, desc: "Marine History-Historic ships"}
     - {id: 279, cat: Books, desc: "Marine History-Marine vessels"}
     - {id: 278, cat: Books, desc: "Marine History-Warships"}
+    - {id: 259, cat: Books, desc: "Marine History-Shipbuilding history"}
     - {id: 277, cat: Books, desc: "Marine History-Wars at Sea"}
     - {id: 276, cat: Books, desc: "Marine History-War at sea (World War I)"}
     - {id: 261, cat: Books, desc: "Marine History-War at sea (World War II)"}