diff --git a/frontend/app/components/assistant-ui/thread.tsx b/frontend/app/components/assistant-ui/thread.tsx
index 47511c2..32ba6db 100644
--- a/frontend/app/components/assistant-ui/thread.tsx
+++ b/frontend/app/components/assistant-ui/thread.tsx
@@ -384,12 +384,13 @@ function useJupyterWorkspaceStatus(sessionId: string | null) {
 			setStatus(null);
 			return;
 		}
+		const sessionIdForRequest = sessionId;
 		let cancelled = false;
 
 		async function refresh() {
 			try {
 				const response = await fetch(
-					`/api/claw/jupyter?session_id=${encodeURIComponent(sessionId)}`,
+					`/api/claw/jupyter?session_id=${encodeURIComponent(sessionIdForRequest)}`,
 					{ cache: "no-store" },
 				);
 				const payload = (await response.json().catch(() => ({}))) as