diff --git a/package.json b/package.json
index 0d33a2e1..2129bea1 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "private": true,
   "name": "dungeonslayers4",
   "description": "An implementation of the Dungeonslayers 4 game system for Foundry Virtual Tabletop.",
-  "version": "1.20.0",
+  "version": "1.21.0",
   "license": "https://git.f3l.de/dungeonslayers/ds4#licensing",
   "homepage": "https://git.f3l.de/dungeonslayers/ds4",
   "repository": {
diff --git a/system.json b/system.json
index fc66eaea..70997eb0 100644
--- a/system.json
+++ b/system.json
@@ -28,12 +28,11 @@
       "name": "Sascha Martens"
     }
   ],
-  "url": "https://git.f3l.de/dungeonslayers/ds4",
-  "license": "https://git.f3l.de/dungeonslayers/ds4/raw/tag/1.20.0/LICENSE.md",
-  "readme": "https://git.f3l.de/dungeonslayers/ds4/raw/tag/1.20.0/README.md",
-  "bugs": "https://git.f3l.de/dungeonslayers/ds4/issues",
-  "changelog": "https://git.f3l.de/dungeonslayers/ds4/releases/tag/1.20.0",
-  "version": "1.20.0",
+  "license": "undefined/raw/tag/1.21.0/LICENSE.md",
+  "readme": "undefined/raw/tag/1.21.0/README.md",
+  "bugs": "undefined/issues",
+  "changelog": "undefined/releases/tag/1.21.0",
+  "version": "1.21.0",
   "flags": {
     "hotReload": {
       "extensions": ["css", "hbs", "json"],
@@ -117,7 +116,7 @@
     }
   ],
   "manifest": "https://git.f3l.de/api/packages/dungeonslayers/generic/ds4/latest/system.json",
-  "download": "https://git.f3l.de/dungeonslayers/ds4/releases/download/1.20.0/ds4.zip",
+  "download": "undefined/releases/download/1.21.0/ds4.zip",
   "initiative": "@combatValues.initiative.total",
   "gridDistance": 1,
   "gridUnits": "m",