diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 86a9ba5..b11143a 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,3 +1,6 @@
+v.4.0
+- Update to FoundryVTT v10 with migrations by @drewg13
+
 v.3.19
 - system.json updated to v3.19
 
diff --git a/system.json b/system.json
index ef8b8c0..2153d73 100644
--- a/system.json
+++ b/system.json
@@ -2,16 +2,17 @@
   "id": "blades-in-the-dark",
   "title": "Blades in the Dark",
   "description": "Blades in the dark game system.",
-  "version": "4.00",
+  "version": "4.0",
   "compatibility": {
     "minimum": 10,
     "verified": "10.284"
   },
   "url": "https://github.com/megastruktur/foundryvtt-blades-in-the-dark/",
-  "manifest": "https://raw.githubusercontent.com/megastruktur/foundryvtt-blades-in-the-dark/master/system.json",
-  "download": "https://github.com/megastruktur/foundryvtt-blades-in-the-dark/archive/4.00.zip",
+  "manifest": "https://raw.githubusercontent.com/megastruktur/foundryvtt-blades-in-the-dark/4.0/system.json",
+  "download": "https://github.com/megastruktur/foundryvtt-blades-in-the-dark/archive/4.0.zip",
   "authors": [
-    { "name": "megastruktur" }
+    { "name": "megastruktur" },
+    { "name": "drewg13" }
   ],
   "esmodules": [
     "module/blades.js"
@@ -157,5 +158,8 @@
       "path": "./packs/entanglements-macro.db",
       "type": "Macro"
     }
-  ]
+  ],
+  "name": "",
+  "minimumCoreVersion": "",
+  "author": ""
 }