diff --git a/changelog.md b/changelog.md
index 01dbabf..971e364 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v2.2.1
+
+- v12 compatibility.
+
 ## v2.2.0
 
 - Re-added "core.compendiumConfiguration" setting to exports to export Compendium Folder structure mappings.
diff --git a/module.json b/module.json
index 97d0b3b..46e780a 100644
--- a/module.json
+++ b/module.json
@@ -23,11 +23,11 @@
     "allowBugReporter": true
   },
   "minimumCoreVersion": "0.6.0",
-  "compatibleCoreVersion": "11",
-  "version": "2.2.0",
+  "compatibleCoreVersion": "12",
+  "version": "2.2.1",
   "compatibility": {
     "minimum": "0.6.0",
-    "verified": "11.306"
+    "verified": "12"
   },
   "scripts": [],
   "esmodules": [
diff --git a/scripts/config.js b/scripts/config.js
index 2cda1da..a119de3 100644
--- a/scripts/config.js
+++ b/scripts/config.js
@@ -6,7 +6,7 @@ export const templates = {
 
 export function isV10orNewer() {
   const gameVersion = game.version || game.data.version;
-  return gameVersion === '10.0' || isNewerVersion(gameVersion, '10');
+  return gameVersion === '10.0' || foundry.utils.isNewerVersion(gameVersion, '10');
 }
 
 export function log(force, ...args) {
diff --git a/scripts/core.js b/scripts/core.js
index 5293973..a7fdb40 100755
--- a/scripts/core.js
+++ b/scripts/core.js
@@ -93,7 +93,7 @@ export default class Core extends FormApplication {
   }
 
   static get defaultOptions() {
-    return mergeObject(super.defaultOptions, {
+    return foundry.utils.mergeObject(super.defaultOptions, {
       classes: ['copy-environment-settings'],
       height: 'auto',
       width: Math.ceil(window.innerWidth / 2),
@@ -307,7 +307,7 @@ export default class Core extends FormApplication {
       return false;
     }
 
-    if (Object.keys(changes).length === 1 && (typeof isEmpty === 'function' ? isEmpty(changes.flags) : isObjectEmpty(changes.flags))) {
+    if (Object.keys(changes).length === 1 && (typeof foundry.utils.isEmpty === 'function' ? foundry.utils.isEmpty(changes.flags) : foundry.utils.isObjectEmpty(changes.flags))) {
       log(true, 'No changes selected for', targetUser?.name);
       return false;
     }
@@ -447,7 +447,7 @@ export default class Core extends FormApplication {
             const value = game.settings.get(v.namespace, v.key);
             let sameValue = value === v.default;
             if (value && typeof value === 'object' && v.default && typeof v.default === 'object') {
-              sameValue = !Object.keys(diffObject(v.default, value)).length && !Object.keys(diffObject(value, v.default)).length;
+              sameValue = !Object.keys(foundry.utils.diffObject(v.default, value)).length && !Object.keys(foundry.utils.diffObject(value, v.default)).length;
             }
             return !sameValue && !excludeModules.some((e) => v.namespace === e);
           } catch (e) {
@@ -526,7 +526,7 @@ export default class Core extends FormApplication {
   }
 
   async processSettings(settings) {
-    if (isNewerVersion((game.version || game.data.version), '0.7.9')) {
+    if (foundry.utils.isNewerVersion((game.version || game.data.version), '0.7.9')) {
       const updates = [];
       const creates = [];
       for (const data of settings) {
@@ -593,6 +593,11 @@ export default class Core extends FormApplication {
             type: 'Setting',
             action: 'update',
             updates: updates,
+            operation: {
+              pack: null,
+              parent: null,
+              updates: updates,
+            }
           });
         }
         if (creates.length) {
@@ -601,6 +606,11 @@ export default class Core extends FormApplication {
             type: 'Setting',
             action: 'create',
             data: creates,
+            operation: {
+              pack: null,
+              parent: null,
+              data: creates,
+            }
           });
         }
         return true;
diff --git a/scripts/setting.js b/scripts/setting.js
index 5b3a58e..283d293 100755
--- a/scripts/setting.js
+++ b/scripts/setting.js
@@ -95,8 +95,8 @@ export class WorldSetting {
         newValue = JSON.parse(newValue);
       }
       if (typeof existingSetting === 'object' && typeof newValue === 'object') {
-        let diff = diffObject(existingSetting, newValue);
-        if (typeof isEmpty === 'function' ? isEmpty(diff) : isObjectEmpty(diff)) {
+        let diff = foundry.utils.diffObject(existingSetting, newValue);
+        if (typeof foundry.utils.isEmpty === 'function' ? foundry.utils.isEmpty(diff) : foundry.utils.isObjectEmpty(diff)) {
           // No difference in the underlying object.
           return new Difference(this.key, null, null);
         }
@@ -167,7 +167,7 @@ export class PlayerSetting {
       );
     }
 
-    let flagDiff = diffObject(userData.flags, setting.flags);
+    let flagDiff = foundry.utils.diffObject(userData.flags, setting.flags);
     for (const prop in flagDiff) {
       if (!flagDiff.hasOwnProperty(prop)) {
         continue;
@@ -198,13 +198,13 @@ export class PlayerSetting {
    * @returns boolean
    */
   hasDataChanges() {
-    if (typeof isEmpty === 'function') {
-      return !isEmpty(this.playerDifferences) || !isEmpty(this.playerFlagDifferences);
+    if (typeof foundry.utils.isEmpty === 'function') {
+      return !foundry.utils.isEmpty(this.playerDifferences) || !foundry.utils.isEmpty(this.playerFlagDifferences);
     }
 
     return (
-      !isObjectEmpty(this.playerDifferences) ||
-      !isObjectEmpty(this.playerFlagDifferences)
+      !foundry.utils.isObjectEmpty(this.playerDifferences) ||
+      !foundry.utils.isObjectEmpty(this.playerFlagDifferences)
     );
   }
 }