diff --git a/extensions.json b/extensions.json
index 65839ca..806ad12 100644
--- a/extensions.json
+++ b/extensions.json
@@ -81,6 +81,7 @@
   "trackers": "https://trackers.owlbear.rodeo/store.md",
   "crawl": "https://www.battle-system.com/owlbear/crawl-docs/store.md",
   "vagabond": "https://vagabond-extension.onrender.com/store.md",
+  "owl20": "https://owl20.friendlymimic.com/store.md",
   "tooltips": "https://raw.githubusercontent.com/desain/owlbear-tooltips/main/docs/store.md",
   "landofeem-sheet": "https://raw.githubusercontent.com/blaze-sanecki/owlbear-landofeem-sheet/master/docs/store.md",
   "persistent-tokens": "https://raw.githubusercontent.com/desain/owlbear-persistence/main/docs/store.md"