diff --git a/frontend/Dockerfile b/frontend/Dockerfile
index 4d231be..8ba2fba 100644
--- a/frontend/Dockerfile
+++ b/frontend/Dockerfile
@@ -22,7 +22,9 @@ WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 # Cap node heap so a build on a small VPS can't OOM-kill neighbours.
-ENV NODE_OPTIONS=--max-old-space-size=1536
+# 1536 stopped being enough at the 2026-07 UI revamp (cmdk, day-picker,
+# chart wrappers); rollup now peaks between 1.5G and 2G.
+ENV NODE_OPTIONS=--max-old-space-size=2048
 RUN corepack enable && pnpm build
 
 # Production: Hono serves dist/ + /api/copilotkit on port 3000