diff --git a/src/create-managers.ts b/src/create-managers.ts
index fb8891d2..de4f5de2 100644
--- a/src/create-managers.ts
+++ b/src/create-managers.ts
@@ -22,8 +22,9 @@ export function createManagers(args: {
   pluginConfig: OhMyOpenCodeConfig
   tmuxConfig: TmuxConfig
   modelCacheState: ModelCacheState
+  backgroundNotificationHookEnabled: boolean
 }): Managers {
-  const { ctx, pluginConfig, tmuxConfig, modelCacheState } = args
+  const { ctx, pluginConfig, tmuxConfig, modelCacheState, backgroundNotificationHookEnabled } = args
 
   const tmuxSessionManager = new TmuxSessionManager(ctx, tmuxConfig)
 
@@ -57,6 +58,7 @@ export function createManagers(args: {
           log("[index] tmux cleanup error during shutdown:", error)
         })
       },
+      enableParentSessionNotifications: backgroundNotificationHookEnabled,
     },
   )
 
diff --git a/src/index.ts b/src/index.ts
index 74707851..a444e512 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -44,6 +44,7 @@ const OhMyOpenCodePlugin: Plugin = async (ctx) => {
     pluginConfig,
     tmuxConfig,
     modelCacheState,
+    backgroundNotificationHookEnabled: isHookEnabled("background-notification"),
   })
 
   const toolsResult = await createTools({