diff --git a/src/components/app-shell.tsx b/src/components/app-shell.tsx
index a30ff9d..b4e1f07 100644
--- a/src/components/app-shell.tsx
+++ b/src/components/app-shell.tsx
@@ -71,7 +71,7 @@ export function AppShell({ children }: { children: ReactNode }) {
         if (data) setProfile({ full_name: data.full_name || "", avatar_url: (data as any).avatar_url ?? null });
       });
     const ch = supabase
-      .channel(`profile-self-${user.id}`)
+      .channel(`profile-self-${user.id}-${Math.random().toString(36).slice(2)}`)
       .on(
         "postgres_changes",
         { event: "UPDATE", schema: "public", table: "profiles", filter: `id=eq.${user.id}` },
diff --git a/src/components/cases/tasks-tab.tsx b/src/components/cases/tasks-tab.tsx
index 30289fb..b01488a 100644
--- a/src/components/cases/tasks-tab.tsx
+++ b/src/components/cases/tasks-tab.tsx
@@ -72,7 +72,7 @@ export function CaseTasksTab({ caseId }: { caseId: string }) {
   useEffect(() => {
     load();
     const ch = supabase
-      .channel(`case-tasks-${caseId}`)
+      .channel(`case-tasks-${caseId}-${Math.random().toString(36).slice(2)}`)
       .on("postgres_changes", { event: "*", schema: "public", table: "tasks", filter: `case_id=eq.${caseId}` }, () => load())
       .on("postgres_changes", { event: "*", schema: "public", table: "task_assignees" }, () => load())
       .subscribe();
diff --git a/src/components/comments/comment-thread.tsx b/src/components/comments/comment-thread.tsx
index 67c3a73..446db21 100644
--- a/src/components/comments/comment-thread.tsx
+++ b/src/components/comments/comment-thread.tsx
@@ -72,7 +72,7 @@ export function CommentThread({
   useEffect(() => {
     load();
     const ch = supabase
-      .channel(`comments-${entityType}-${entityId}`)
+      .channel(`comments-${entityType}-${entityId}-${Math.random().toString(36).slice(2)}`)
       .on(
         "postgres_changes",
         { event: "*", schema: "public", table: "comments", filter: `entity_id=eq.${entityId}` },
diff --git a/src/components/notifications/notification-bell.tsx b/src/components/notifications/notification-bell.tsx
index 796eeeb..8e025a8 100644
--- a/src/components/notifications/notification-bell.tsx
+++ b/src/components/notifications/notification-bell.tsx
@@ -48,7 +48,7 @@ export function NotificationBell() {
     if (!user) return;
     load();
     const ch = supabase
-      .channel(`notif-${user.id}`)
+      .channel(`notif-${user.id}-${Math.random().toString(36).slice(2)}`)
       .on(
         "postgres_changes",
         { event: "*", schema: "public", table: "notifications", filter: `user_id=eq.${user.id}` },
diff --git a/src/components/tasks/task-detail-panel.tsx b/src/components/tasks/task-detail-panel.tsx
index 0c65501..a99b006 100644
--- a/src/components/tasks/task-detail-panel.tsx
+++ b/src/components/tasks/task-detail-panel.tsx
@@ -153,7 +153,7 @@ export function TaskDetailPanel({
   useEffect(() => {
     if (!open || !taskId) return;
     const ch = supabase
-      .channel(`task-${taskId}`)
+      .channel(`task-${taskId}-${Math.random().toString(36).slice(2)}`)
       .on("postgres_changes", { event: "*", schema: "public", table: "task_comments", filter: `task_id=eq.${taskId}` }, () => load())
       .on("postgres_changes", { event: "*", schema: "public", table: "task_assignees", filter: `task_id=eq.${taskId}` }, () => load())
       .on("postgres_changes", { event: "*", schema: "public", table: "tasks", filter: `id=eq.${taskId}` }, () => load())
diff --git a/src/lib/use-bubble-counts.ts b/src/lib/use-bubble-counts.ts
index 641a58e..8b3719e 100644
--- a/src/lib/use-bubble-counts.ts
+++ b/src/lib/use-bubble-counts.ts
@@ -63,7 +63,7 @@ export function useBubbleCounts(): Counts {
     if (!user) return;
     load();
     const ch = supabase
-      .channel(`bubbles-${user.id}`)
+      .channel(`bubbles-${user.id}-${Math.random().toString(36).slice(2)}`)
       .on("postgres_changes", { event: "*", schema: "public", table: "messages" }, () => load())
       .on("postgres_changes", { event: "*", schema: "public", table: "task_assignees" }, () => load())
       .on("postgres_changes", { event: "*", schema: "public", table: "tasks" }, () => load())
diff --git a/src/routes/messages.index.tsx b/src/routes/messages.index.tsx
index abb7d26..757acbf 100644
--- a/src/routes/messages.index.tsx
+++ b/src/routes/messages.index.tsx
@@ -147,7 +147,7 @@ function MessagesPage() {
   useEffect(() => {
     if (!uid) return;
     const ch = supabase
-      .channel("messages-global")
+      .channel(`messages-global-${Math.random().toString(36).slice(2)}`)
       .on("postgres_changes", { event: "INSERT", schema: "public", table: "messages" }, () => {
         loadAll();
         refreshUnread();
@@ -477,7 +477,7 @@ function ChatPanel({
   // Realtime subscription scoped to this conversation
   useEffect(() => {
     const ch = supabase
-      .channel(`conv-${conversationId}`)
+      .channel(`conv-${conversationId}-${Math.random().toString(36).slice(2)}`)
       .on(
         "postgres_changes",
         { event: "*", schema: "public", table: "messages", filter: `conversation_id=eq.${conversationId}` },
diff --git a/src/routes/tasks.index.tsx b/src/routes/tasks.index.tsx
index c0d1db8..38b4b13 100644
--- a/src/routes/tasks.index.tsx
+++ b/src/routes/tasks.index.tsx
@@ -105,7 +105,7 @@ function TasksPage() {
   useEffect(() => {
     load();
     const ch = supabase
-      .channel("tasks-list")
+      .channel(`tasks-list-${Math.random().toString(36).slice(2)}`)
       .on("postgres_changes", { event: "*", schema: "public", table: "tasks" }, () => load())
       .on("postgres_changes", { event: "*", schema: "public", table: "task_assignees" }, () => load())
       .subscribe();