diff --git a/services/web/frontend/js/features/ide-settings/hooks/use-project-notification-preferences.ts b/services/web/frontend/js/features/ide-settings/hooks/use-project-notification-preferences.ts
index ac72d85532..236355b596 100644
--- a/services/web/frontend/js/features/ide-settings/hooks/use-project-notification-preferences.ts
+++ b/services/web/frontend/js/features/ide-settings/hooks/use-project-notification-preferences.ts
@@ -26,6 +26,7 @@ function levelToPreferences(
         commentOnInvitedProject: true,
         repliesOnAuthoredThread: true,
         repliesOnParticipatingThread: true,
+        mentionsInThread: true,
         commentResolvedOnAuthoredThread: true,
         commentResolvedOnParticipatingThread: true,
         commentReopenedOnAuthoredThread: true,
@@ -41,6 +42,7 @@ function levelToPreferences(
         commentOnInvitedProject: false,
         repliesOnAuthoredThread: true,
         repliesOnParticipatingThread: true,
+        mentionsInThread: true,
         commentResolvedOnAuthoredThread: true,
         commentResolvedOnParticipatingThread: true,
         commentReopenedOnAuthoredThread: true,
@@ -56,6 +58,7 @@ function levelToPreferences(
         commentOnInvitedProject: false,
         repliesOnAuthoredThread: false,
         repliesOnParticipatingThread: false,
+        mentionsInThread: false,
         commentResolvedOnAuthoredThread: false,
         commentResolvedOnParticipatingThread: false,
         commentReopenedOnAuthoredThread: false,
@@ -93,6 +96,7 @@ function preferencesToLevel(
   const anyParticipantNotifications =
     preferences.repliesOnAuthoredThread ||
     preferences.repliesOnParticipatingThread ||
+    preferences.mentionsInThread ||
     preferences.trackChangesAcceptedOnAuthoredChange ||
     preferences.trackChangesRejectedOnAuthoredChange ||
     preferences.commentResolvedOnAuthoredThread ||
diff --git a/services/web/test/frontend/features/ide-settings/settings/project-notifications-setting.test.tsx b/services/web/test/frontend/features/ide-settings/settings/project-notifications-setting.test.tsx
index 3ed3ec7d97..ffbcb377a3 100644
--- a/services/web/test/frontend/features/ide-settings/settings/project-notifications-setting.test.tsx
+++ b/services/web/test/frontend/features/ide-settings/settings/project-notifications-setting.test.tsx
@@ -13,6 +13,7 @@ const allNotificationsOn = {
   commentOnInvitedProject: true,
   repliesOnAuthoredThread: true,
   repliesOnParticipatingThread: true,
+  mentionsInThread: true,
   commentResolvedOnAuthoredThread: true,
   commentResolvedOnParticipatingThread: true,
   commentReopenedOnAuthoredThread: true,
@@ -28,6 +29,7 @@ const repliesOnlyPreferences = {
   commentOnInvitedProject: false,
   repliesOnAuthoredThread: true,
   repliesOnParticipatingThread: true,
+  mentionsInThread: true,
   commentResolvedOnAuthoredThread: true,
   commentResolvedOnParticipatingThread: true,
   commentReopenedOnAuthoredThread: true,
@@ -59,6 +61,7 @@ const allNotificationsOff = {
   commentOnInvitedProject: false,
   repliesOnAuthoredThread: false,
   repliesOnParticipatingThread: false,
+  mentionsInThread: false,
   commentResolvedOnAuthoredThread: false,
   commentResolvedOnParticipatingThread: false,
   commentReopenedOnAuthoredThread: false,