diff --git a/module.json b/module.json
index 10127ff..343353c 100644
--- a/module.json
+++ b/module.json
@@ -84,7 +84,8 @@
         "demonlord",
         "ose",
         "foundry-chromatic-dungeons",
-        "degenesis"
+        "degenesis",
+        "ffd20"
     ],
     "relationships": {
         "systems": [
@@ -175,6 +176,14 @@
                 "compatibility": {
                     "verified": "0.5.1"
                 }
+            },
+            {
+                "id": "ffd20",
+                "type": "system",
+                "manifest": "https://github.com/Ritsuna/Foundry_FFD20/blob/master/system.json",
+                "compatibility": {
+                    "verified": "10.1.7"
+                }
             }
         ]
     },
@@ -184,4 +193,4 @@
     "download": "https://github.com/League-of-Foundry-Developers/fvtt-module-lmrtfy/releases/download/v3.00/module.zip",
     "changelog": "https://github.com/League-of-Foundry-Developers/fvtt-module-lmrtfy/releases",
     "bugs": "https://github.com/League-of-Foundry-Developers/fvtt-module-lmrtfy/issues"
-}
\ No newline at end of file
+}