diff --git a/browser/components/aboutwelcome/modules/AWScreenUtils.sys.mjs b/browser/components/aboutwelcome/modules/AWScreenUtils.sys.mjs
index 7f50f1bdf8aa..85c1f8adaa57 100644
--- a/browser/components/aboutwelcome/modules/AWScreenUtils.sys.mjs
+++ b/browser/components/aboutwelcome/modules/AWScreenUtils.sys.mjs
@@ -15,9 +15,12 @@ const { XPCOMUtils } = ChromeUtils.importESModule(
 
 const lazy = {};
 
+ChromeUtils.defineESModuleGetters(lazy, {
+  ASRouterTargeting: "resource:///modules/asrouter/ASRouterTargeting.sys.mjs",
+});
+
 XPCOMUtils.defineLazyModuleGetters(lazy, {
   ASRouter: "resource:///modules/asrouter/ASRouter.jsm",
-  ASRouterTargeting: "resource:///modules/asrouter/ASRouterTargeting.jsm",
 });
 
 export const AWScreenUtils = {
diff --git a/browser/components/aboutwelcome/tests/browser/head.js b/browser/components/aboutwelcome/tests/browser/head.js
index 6d8355795b35..0854a3efb036 100644
--- a/browser/components/aboutwelcome/tests/browser/head.js
+++ b/browser/components/aboutwelcome/tests/browser/head.js
@@ -5,13 +5,10 @@
 
 ChromeUtils.defineESModuleGetters(this, {
   FxAccounts: "resource://gre/modules/FxAccounts.sys.mjs",
+  QueryCache: "resource:///modules/asrouter/ASRouterTargeting.sys.mjs",
   sinon: "resource://testing-common/Sinon.sys.mjs",
 });
 
-XPCOMUtils.defineLazyModuleGetters(this, {
-  QueryCache: "resource:///modules/asrouter/ASRouterTargeting.jsm",
-});
-
 // Set the content pref to make it available across tests
 const ABOUT_WELCOME_OVERRIDE_CONTENT_PREF = "browser.aboutwelcome.screens";
 
diff --git a/browser/components/asrouter/karma.mc.config.js b/browser/components/asrouter/karma.mc.config.js
index c4406d496410..1f2d7972f72e 100644
--- a/browser/components/asrouter/karma.mc.config.js
+++ b/browser/components/asrouter/karma.mc.config.js
@@ -219,7 +219,7 @@ module.exports = function (config) {
             exclude: [
               path.resolve("tests"),
               path.resolve("../newtab"),
-              path.resolve("modules/ASRouterTargeting.jsm"),
+              path.resolve("modules/ASRouterTargeting.sys.mjs"),
               path.resolve("modules/ASRouterTriggerListeners.sys.mjs"),
               path.resolve("modules/CFRMessageProvider.sys.mjs"),
               path.resolve("modules/CFRPageActions.sys.mjs"),
diff --git a/browser/components/asrouter/modules/ASRouter.jsm b/browser/components/asrouter/modules/ASRouter.jsm
index a0cc0ddb00e0..352f37744414 100644
--- a/browser/components/asrouter/modules/ASRouter.jsm
+++ b/browser/components/asrouter/modules/ASRouter.jsm
@@ -13,6 +13,7 @@ const { AppConstants } = ChromeUtils.importESModule(
 const lazy = {};
 
 ChromeUtils.defineESModuleGetters(lazy, {
+  ASRouterTargeting: "resource:///modules/asrouter/ASRouterTargeting.sys.mjs",
   ASRouterTriggerListeners:
     "resource:///modules/asrouter/ASRouterTriggerListeners.sys.mjs",
   Downloader: "resource://services-settings/Attachments.sys.mjs",
@@ -38,7 +39,6 @@ ChromeUtils.defineESModuleGetters(lazy, {
 });
 
 XPCOMUtils.defineLazyModuleGetters(lazy, {
-  ASRouterTargeting: "resource:///modules/asrouter/ASRouterTargeting.jsm",
   ASRouterPreferences: "resource:///modules/asrouter/ASRouterPreferences.jsm",
   TARGETING_PREFERENCES: "resource:///modules/asrouter/ASRouterPreferences.jsm",
 });
diff --git a/browser/components/asrouter/modules/ASRouterDefaultConfig.sys.mjs b/browser/components/asrouter/modules/ASRouterDefaultConfig.sys.mjs
index 8e57dc8d1d57..6c4cbbcd6dc8 100644
--- a/browser/components/asrouter/modules/ASRouterDefaultConfig.sys.mjs
+++ b/browser/components/asrouter/modules/ASRouterDefaultConfig.sys.mjs
@@ -23,9 +23,7 @@ const { SpecialMessageActions } = ChromeUtils.importESModule(
 const { ASRouterPreferences } = ChromeUtils.import(
   "resource:///modules/asrouter/ASRouterPreferences.jsm"
 );
-const { QueryCache } = ChromeUtils.import(
-  "resource:///modules/asrouter/ASRouterTargeting.jsm"
-);
+import { QueryCache } from "resource:///modules/asrouter/ASRouterTargeting.sys.mjs";
 import { ActivityStreamStorage } from "resource://activity-stream/lib/ActivityStreamStorage.sys.mjs";
 
 const createStorage = async telemetryFeed => {
diff --git a/browser/components/asrouter/modules/ASRouterTargeting.jsm b/browser/components/asrouter/modules/ASRouterTargeting.sys.mjs
similarity index 98%
rename from browser/components/asrouter/modules/ASRouterTargeting.jsm
rename to browser/components/asrouter/modules/ASRouterTargeting.sys.mjs
index da59e80a0ec0..1034285841af 100644
--- a/browser/components/asrouter/modules/ASRouterTargeting.jsm
+++ b/browser/components/asrouter/modules/ASRouterTargeting.sys.mjs
@@ -6,15 +6,29 @@ const FXA_ENABLED_PREF = "identity.fxaccounts.enabled";
 const DISTRIBUTION_ID_PREF = "distribution.id";
 const DISTRIBUTION_ID_CHINA_REPACK = "MozillaOnline";
 
+// We use importESModule here instead of static import so that
+// the Karma test environment won't choke on this module. This
+// is because the Karma test environment already stubs out
+// XPCOMUtils, AppConstants, NewTabUtils and ShellService, and
+// overrides importESModule to be a no-op (which can't be done
+// for a static import statement).
+
+// eslint-disable-next-line mozilla/use-static-import
 const { XPCOMUtils } = ChromeUtils.importESModule(
   "resource://gre/modules/XPCOMUtils.sys.mjs"
 );
+
+// eslint-disable-next-line mozilla/use-static-import
 const { AppConstants } = ChromeUtils.importESModule(
   "resource://gre/modules/AppConstants.sys.mjs"
 );
+
+// eslint-disable-next-line mozilla/use-static-import
 const { NewTabUtils } = ChromeUtils.importESModule(
   "resource://gre/modules/NewTabUtils.sys.mjs"
 );
+
+// eslint-disable-next-line mozilla/use-static-import
 const { ShellService } = ChromeUtils.importESModule(
   "resource:///modules/ShellService.sys.mjs"
 );
@@ -172,7 +186,7 @@ const jexlEvaluationCache = new Map();
  * @param options {any=} Options passed to the method
  * @param updateInterval {number?} Update interval for query. Defaults to FRECENT_SITES_UPDATE_INTERVAL
  */
-function CachedTargetingGetter(
+export function CachedTargetingGetter(
   property,
   options = null,
   updateInterval = FRECENT_SITES_UPDATE_INTERVAL,
@@ -269,7 +283,7 @@ function CheckBrowserNeedsUpdate(
   return checker;
 }
 
-const QueryCache = {
+export const QueryCache = {
   expireAll() {
     Object.keys(this.queries).forEach(query => {
       this.queries[query].expire();
@@ -376,7 +390,7 @@ function sortMessagesByWeightedRank(messages) {
  * @param {boolean} options.ordered - Should .order be used instead of random weighted sorting?
  * @returns {Array<Message>}
  */
-function getSortedMessages(messages, options = {}) {
+export function getSortedMessages(messages, options = {}) {
   let { ordered } = { ordered: false, ...options };
   let result = messages;
 
@@ -1040,7 +1054,7 @@ const TargetingGetters = {
   },
 };
 
-const ASRouterTargeting = {
+export const ASRouterTargeting = {
   Environment: TargetingGetters,
 
   /**
@@ -1282,10 +1296,3 @@ const ASRouterTargeting = {
     return matching;
   },
 };
-
-const EXPORTED_SYMBOLS = [
-  "ASRouterTargeting",
-  "QueryCache",
-  "CachedTargetingGetter",
-  "getSortedMessages",
-];
diff --git a/browser/components/asrouter/moz.build b/browser/components/asrouter/moz.build
index bc0d37846f15..00b411b7e7e0 100644
--- a/browser/components/asrouter/moz.build
+++ b/browser/components/asrouter/moz.build
@@ -21,7 +21,7 @@ EXTRA_JS_MODULES.asrouter += [
     "modules/ASRouterNewTabHook.sys.mjs",
     "modules/ASRouterParentProcessMessageHandler.sys.mjs",
     "modules/ASRouterPreferences.jsm",
-    "modules/ASRouterTargeting.jsm",
+    "modules/ASRouterTargeting.sys.mjs",
     "modules/ASRouterTriggerListeners.sys.mjs",
     "modules/CFRMessageProvider.sys.mjs",
     "modules/CFRPageActions.sys.mjs",
diff --git a/browser/components/asrouter/tests/browser/browser_asrouter_targeting.js b/browser/components/asrouter/tests/browser/browser_asrouter_targeting.js
index af7ba335ff24..432b4b75a73e 100644
--- a/browser/components/asrouter/tests/browser/browser_asrouter_targeting.js
+++ b/browser/components/asrouter/tests/browser/browser_asrouter_targeting.js
@@ -1,12 +1,9 @@
-XPCOMUtils.defineLazyModuleGetters(this, {
-  ASRouterTargeting: "resource:///modules/asrouter/ASRouterTargeting.jsm",
-  QueryCache: "resource:///modules/asrouter/ASRouterTargeting.jsm",
-});
 ChromeUtils.defineESModuleGetters(this, {
   AddonManager: "resource://gre/modules/AddonManager.sys.mjs",
   AddonTestUtils: "resource://testing-common/AddonTestUtils.sys.mjs",
   AboutNewTab: "resource:///modules/AboutNewTab.sys.mjs",
   AppConstants: "resource://gre/modules/AppConstants.sys.mjs",
+  ASRouterTargeting: "resource:///modules/asrouter/ASRouterTargeting.sys.mjs",
   AttributionCode: "resource:///modules/AttributionCode.sys.mjs",
   BrowserWindowTracker: "resource:///modules/BrowserWindowTracker.sys.mjs",
   BuiltInThemes: "resource:///modules/BuiltInThemes.sys.mjs",
@@ -19,6 +16,7 @@ ChromeUtils.defineESModuleGetters(this, {
   NimbusFeatures: "resource://nimbus/ExperimentAPI.sys.mjs",
   PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
   ProfileAge: "resource://gre/modules/ProfileAge.sys.mjs",
+  QueryCache: "resource:///modules/asrouter/ASRouterTargeting.sys.mjs",
   Region: "resource://gre/modules/Region.sys.mjs",
   ShellService: "resource:///modules/ShellService.sys.mjs",
   TargetingContext: "resource://messaging-system/targeting/Targeting.sys.mjs",
diff --git a/browser/components/asrouter/tests/unit/ASRouter.test.js b/browser/components/asrouter/tests/unit/ASRouter.test.js
index 00a6cddd75b7..f23047be4438 100644
--- a/browser/components/asrouter/tests/unit/ASRouter.test.js
+++ b/browser/components/asrouter/tests/unit/ASRouter.test.js
@@ -1,5 +1,5 @@
 import { _ASRouter, MessageLoaderUtils } from "modules/ASRouter.jsm";
-import { QueryCache } from "modules/ASRouterTargeting.jsm";
+import { QueryCache } from "modules/ASRouterTargeting.sys.mjs";
 import {
   FAKE_LOCAL_MESSAGES,
   FAKE_LOCAL_PROVIDER,
diff --git a/browser/components/asrouter/tests/unit/ASRouterTargeting.test.js b/browser/components/asrouter/tests/unit/ASRouterTargeting.test.js
index dd4fae9690cf..db0afd4a68a7 100644
--- a/browser/components/asrouter/tests/unit/ASRouterTargeting.test.js
+++ b/browser/components/asrouter/tests/unit/ASRouterTargeting.test.js
@@ -3,7 +3,7 @@ import {
   CachedTargetingGetter,
   getSortedMessages,
   QueryCache,
-} from "modules/ASRouterTargeting.jsm";
+} from "modules/ASRouterTargeting.sys.mjs";
 import { OnboardingMessageProvider } from "modules/OnboardingMessageProvider.sys.mjs";
 import { ASRouterPreferences } from "modules/ASRouterPreferences.jsm";
 import { GlobalOverrider } from "test/unit/utils";
diff --git a/browser/components/asrouter/tests/unit/TargetingDocs.test.js b/browser/components/asrouter/tests/unit/TargetingDocs.test.js
index 07d11c90587d..0d4744e672db 100644
--- a/browser/components/asrouter/tests/unit/TargetingDocs.test.js
+++ b/browser/components/asrouter/tests/unit/TargetingDocs.test.js
@@ -1,4 +1,4 @@
-import { ASRouterTargeting } from "modules/ASRouterTargeting.jsm";
+import { ASRouterTargeting } from "modules/ASRouterTargeting.sys.mjs";
 import docs from "docs/targeting-attributes.md";
 
 // The following targeting parameters are either deprecated or should not be included in the docs for some reason.
diff --git a/browser/components/asrouter/tests/xpcshell/test_ASRouterTargeting_attribution.js b/browser/components/asrouter/tests/xpcshell/test_ASRouterTargeting_attribution.js
index 133bb8a1fdbd..a37cb6c7938d 100644
--- a/browser/components/asrouter/tests/xpcshell/test_ASRouterTargeting_attribution.js
+++ b/browser/components/asrouter/tests/xpcshell/test_ASRouterTargeting_attribution.js
@@ -7,8 +7,8 @@
 const { AttributionCode } = ChromeUtils.importESModule(
   "resource:///modules/AttributionCode.sys.mjs"
 );
-const { ASRouterTargeting } = ChromeUtils.import(
-  "resource:///modules/asrouter/ASRouterTargeting.jsm"
+const { ASRouterTargeting } = ChromeUtils.importESModule(
+  "resource:///modules/asrouter/ASRouterTargeting.sys.mjs"
 );
 const { MacAttribution } = ChromeUtils.importESModule(
   "resource:///modules/MacAttribution.sys.mjs"
diff --git a/browser/components/asrouter/tests/xpcshell/test_ASRouterTargeting_snapshot.js b/browser/components/asrouter/tests/xpcshell/test_ASRouterTargeting_snapshot.js
index 373af07d1c25..abc197bc9eb1 100644
--- a/browser/components/asrouter/tests/xpcshell/test_ASRouterTargeting_snapshot.js
+++ b/browser/components/asrouter/tests/xpcshell/test_ASRouterTargeting_snapshot.js
@@ -4,8 +4,8 @@
 
 "use strict";
 
-const { ASRouterTargeting } = ChromeUtils.import(
-  "resource:///modules/asrouter/ASRouterTargeting.jsm"
+const { ASRouterTargeting } = ChromeUtils.importESModule(
+  "resource:///modules/asrouter/ASRouterTargeting.sys.mjs"
 );
 
 add_task(async function should_ignore_rejections() {
diff --git a/browser/components/newtab/test/browser/browser_foxdoodle_set_default.js b/browser/components/newtab/test/browser/browser_foxdoodle_set_default.js
index 83259b46b73a..50c919bca9d7 100644
--- a/browser/components/newtab/test/browser/browser_foxdoodle_set_default.js
+++ b/browser/components/newtab/test/browser/browser_foxdoodle_set_default.js
@@ -7,8 +7,8 @@ const { ASRouter } = ChromeUtils.import(
   "resource:///modules/asrouter/ASRouter.jsm"
 );
 
-const { ASRouterTargeting } = ChromeUtils.import(
-  "resource:///modules/asrouter/ASRouterTargeting.jsm"
+const { ASRouterTargeting } = ChromeUtils.importESModule(
+  "resource:///modules/asrouter/ASRouterTargeting.sys.mjs"
 );
 
 const { OnboardingMessageProvider } = ChromeUtils.importESModule(
diff --git a/browser/components/newtab/test/browser/head.js b/browser/components/newtab/test/browser/head.js
index ee56e3072cac..ed3ea03d5549 100644
--- a/browser/components/newtab/test/browser/head.js
+++ b/browser/components/newtab/test/browser/head.js
@@ -10,10 +10,10 @@ ChromeUtils.defineESModuleGetters(this, {
     "resource:///modules/asrouter/FeatureCalloutMessages.sys.mjs",
   ObjectUtils: "resource://gre/modules/ObjectUtils.sys.mjs",
   PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
+  QueryCache: "resource:///modules/asrouter/ASRouterTargeting.sys.mjs",
 });
 XPCOMUtils.defineLazyModuleGetters(this, {
   ASRouter: "resource:///modules/asrouter/ASRouter.jsm",
-  QueryCache: "resource:///modules/asrouter/ASRouterTargeting.jsm",
 });
 
 // We import sinon here to make it available across all mochitest test files
diff --git a/toolkit/components/backgroundtasks/tests/BackgroundTask_targeting.sys.mjs b/toolkit/components/backgroundtasks/tests/BackgroundTask_targeting.sys.mjs
index 686f26b05146..fd47d184701a 100644
--- a/toolkit/components/backgroundtasks/tests/BackgroundTask_targeting.sys.mjs
+++ b/toolkit/components/backgroundtasks/tests/BackgroundTask_targeting.sys.mjs
@@ -5,9 +5,7 @@
 
 import { EXIT_CODE } from "resource://gre/modules/BackgroundTasksManager.sys.mjs";
 
-const { ASRouterTargeting } = ChromeUtils.import(
-  "resource:///modules/asrouter/ASRouterTargeting.jsm"
-);
+import { ASRouterTargeting } from "resource:///modules/asrouter/ASRouterTargeting.sys.mjs";
 
 // Background tasks are "live" with a temporary profile that doesn't map common
 // network preferences to https://mochi.test in the way that regular testing
diff --git a/toolkit/components/backgroundtasks/tests/xpcshell/test_backgroundtask_experiments.js b/toolkit/components/backgroundtasks/tests/xpcshell/test_backgroundtask_experiments.js
index aad0128eb804..ce32123769bb 100644
--- a/toolkit/components/backgroundtasks/tests/xpcshell/test_backgroundtask_experiments.js
+++ b/toolkit/components/backgroundtasks/tests/xpcshell/test_backgroundtask_experiments.js
@@ -14,8 +14,8 @@
 // 3.  We verify that relevant opt-out prefs disable the Nimbus and Firefox
 //     Messaging System experience.
 
-const { ASRouterTargeting } = ChromeUtils.import(
-  "resource:///modules/asrouter/ASRouterTargeting.jsm"
+const { ASRouterTargeting } = ChromeUtils.importESModule(
+  "resource:///modules/asrouter/ASRouterTargeting.sys.mjs"
 );
 
 // These randomization IDs were extracted by hand from Firefox instances.
diff --git a/toolkit/components/backgroundtasks/tests/xpcshell/test_backgroundtasksutils.js b/toolkit/components/backgroundtasks/tests/xpcshell/test_backgroundtasksutils.js
index 48d9154531c6..b160cedce4cf 100644
--- a/toolkit/components/backgroundtasks/tests/xpcshell/test_backgroundtasksutils.js
+++ b/toolkit/components/backgroundtasks/tests/xpcshell/test_backgroundtasksutils.js
@@ -7,13 +7,10 @@
 const { BackgroundTasksUtils } = ChromeUtils.importESModule(
   "resource://gre/modules/BackgroundTasksUtils.sys.mjs"
 );
-const { XPCOMUtils } = ChromeUtils.importESModule(
-  "resource://gre/modules/XPCOMUtils.sys.mjs"
-);
 
 const lazy = {};
-XPCOMUtils.defineLazyModuleGetters(lazy, {
-  ASRouterTargeting: "resource:///modules/asrouter/ASRouterTargeting.jsm",
+ChromeUtils.defineESModuleGetters(lazy, {
+  ASRouterTargeting: "resource:///modules/asrouter/ASRouterTargeting.sys.mjs",
 });
 
 setupProfileService();
diff --git a/toolkit/components/messaging-system/targeting/Targeting.sys.mjs b/toolkit/components/messaging-system/targeting/Targeting.sys.mjs
index ffcf9555c16f..8134920b1840 100644
--- a/toolkit/components/messaging-system/targeting/Targeting.sys.mjs
+++ b/toolkit/components/messaging-system/targeting/Targeting.sys.mjs
@@ -2,12 +2,14 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
 import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs";
 
 const lazy = {};
 
 ChromeUtils.defineESModuleGetters(lazy, {
+  ASRouterTargeting:
+    // eslint-disable-next-line mozilla/no-browser-refs-in-toolkit
+    "resource:///modules/asrouter/ASRouterTargeting.sys.mjs",
   ClientEnvironment: "resource://normandy/lib/ClientEnvironment.sys.mjs",
   ClientEnvironmentBase:
     "resource://gre/modules/components-utils/ClientEnvironment.sys.mjs",
@@ -18,12 +20,6 @@ ChromeUtils.defineESModuleGetters(lazy, {
   setTimeout: "resource://gre/modules/Timer.sys.mjs",
 });
 
-XPCOMUtils.defineLazyModuleGetters(lazy, {
-  ASRouterTargeting:
-    // eslint-disable-next-line mozilla/no-browser-refs-in-toolkit
-    "resource:///modules/asrouter/ASRouterTargeting.jsm",
-});
-
 const TARGETING_EVENT_CATEGORY = "messaging_experiments";
 const TARGETING_EVENT_METHOD = "targeting";
 const DEFAULT_TIMEOUT = 5000;
diff --git a/toolkit/components/nimbus/lib/RemoteSettingsExperimentLoader.sys.mjs b/toolkit/components/nimbus/lib/RemoteSettingsExperimentLoader.sys.mjs
index f3cff56f19fd..8e026e5cba02 100644
--- a/toolkit/components/nimbus/lib/RemoteSettingsExperimentLoader.sys.mjs
+++ b/toolkit/components/nimbus/lib/RemoteSettingsExperimentLoader.sys.mjs
@@ -8,6 +8,9 @@ const lazy = {};
 
 ChromeUtils.defineESModuleGetters(lazy, {
   _ExperimentFeature: "resource://nimbus/ExperimentAPI.sys.mjs",
+  ASRouterTargeting:
+    // eslint-disable-next-line mozilla/no-browser-refs-in-toolkit
+    "resource:///modules/asrouter/ASRouterTargeting.sys.mjs",
   CleanupManager: "resource://normandy/lib/CleanupManager.sys.mjs",
   ExperimentManager: "resource://nimbus/lib/ExperimentManager.sys.mjs",
   JsonSchema: "resource://gre/modules/JsonSchema.sys.mjs",
@@ -16,12 +19,6 @@ ChromeUtils.defineESModuleGetters(lazy, {
   TargetingContext: "resource://messaging-system/targeting/Targeting.sys.mjs",
 });
 
-XPCOMUtils.defineLazyModuleGetters(lazy, {
-  ASRouterTargeting:
-    // eslint-disable-next-line mozilla/no-browser-refs-in-toolkit
-    "resource:///modules/asrouter/ASRouterTargeting.jsm",
-});
-
 ChromeUtils.defineLazyGetter(lazy, "log", () => {
   const { Logger } = ChromeUtils.importESModule(
     "resource://messaging-system/lib/Logger.sys.mjs"
diff --git a/toolkit/mozapps/update/BackgroundUpdate.sys.mjs b/toolkit/mozapps/update/BackgroundUpdate.sys.mjs
index 802f94ca8c2e..c8b80e604170 100644
--- a/toolkit/mozapps/update/BackgroundUpdate.sys.mjs
+++ b/toolkit/mozapps/update/BackgroundUpdate.sys.mjs
@@ -11,6 +11,9 @@ const lazy = {};
 
 ChromeUtils.defineESModuleGetters(lazy, {
   AddonManager: "resource://gre/modules/AddonManager.sys.mjs",
+  ASRouterTargeting:
+    // eslint-disable-next-line mozilla/no-browser-refs-in-toolkit
+    "resource:///modules/asrouter/ASRouterTargeting.sys.mjs",
   BackgroundTasksUtils: "resource://gre/modules/BackgroundTasksUtils.sys.mjs",
   JSONFile: "resource://gre/modules/JSONFile.sys.mjs",
   TaskScheduler: "resource://gre/modules/TaskScheduler.sys.mjs",
@@ -18,12 +21,6 @@ ChromeUtils.defineESModuleGetters(lazy, {
   NimbusFeatures: "resource://nimbus/ExperimentAPI.sys.mjs",
 });
 
-XPCOMUtils.defineLazyModuleGetters(lazy, {
-  ASRouterTargeting:
-    // eslint-disable-next-line mozilla/no-browser-refs-in-toolkit
-    "resource:///modules/asrouter/ASRouterTargeting.jsm",
-});
-
 ChromeUtils.defineLazyGetter(lazy, "log", () => {
   let { ConsoleAPI } = ChromeUtils.importESModule(
     "resource://gre/modules/Console.sys.mjs"
diff --git a/toolkit/mozapps/update/tests/unit_background_update/test_backgroundupdate_glean.js b/toolkit/mozapps/update/tests/unit_background_update/test_backgroundupdate_glean.js
index 9db213a7fc64..b9d19153859f 100644
--- a/toolkit/mozapps/update/tests/unit_background_update/test_backgroundupdate_glean.js
+++ b/toolkit/mozapps/update/tests/unit_background_update/test_backgroundupdate_glean.js
@@ -6,8 +6,8 @@
 
 "use strict";
 
-const { ASRouterTargeting } = ChromeUtils.import(
-  "resource:///modules/asrouter/ASRouterTargeting.jsm"
+const { ASRouterTargeting } = ChromeUtils.importESModule(
+  "resource:///modules/asrouter/ASRouterTargeting.sys.mjs"
 );
 
 const { BackgroundUpdate } = ChromeUtils.importESModule(