diff --git a/bun.lock b/bun.lock
index 899b1121a..d75d88c20 100644
--- a/bun.lock
+++ b/bun.lock
@@ -1,5 +1,6 @@
 {
   "lockfileVersion": 1,
+  "configVersion": 0,
   "workspaces": {
     "": {
       "name": "@coder/cmux",
diff --git a/src/node/services/agentSession.ts b/src/node/services/agentSession.ts
index 942d5105f..a2cf0a78e 100644
--- a/src/node/services/agentSession.ts
+++ b/src/node/services/agentSession.ts
@@ -92,6 +92,10 @@ export class AgentSession {
       return;
     }
     this.disposed = true;
+
+    // Stop any active stream (fire and forget - disposal shouldn't block)
+    void this.aiService.stopStream(this.workspaceId, /* abandonPartial */ true);
+
     for (const { event, handler } of this.aiListeners) {
       this.aiService.off(event, handler as never);
     }