diff --git a/vite.config.ts b/vite.config.ts
index c368d7a..72c5f99 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -120,9 +120,14 @@ export default defineConfig(({ mode }) => {
       rollupOptions: {
         output: {
           manualChunks: {
-            'vendor-tldraw': ['@tldraw/tldraw', '@tldraw/state', '@tldraw/store'],
-            'vendor-mui': ['@mui/material', '@mui/icons-material', '@emotion/react', '@emotion/styled'],
+            'vendor-react':    ['react', 'react-dom', 'react-router-dom'],
+            'vendor-tldraw':   ['@tldraw/tldraw', '@tldraw/state', '@tldraw/store'],
+            'vendor-mui':      ['@mui/material', '@mui/icons-material', '@emotion/react', '@emotion/styled'],
             'vendor-supabase': ['@supabase/supabase-js'],
+            'vendor-calendar': ['@fullcalendar/core', '@fullcalendar/daygrid', '@fullcalendar/interaction',
+                                '@fullcalendar/list', '@fullcalendar/multimonth', '@fullcalendar/react',
+                                '@fullcalendar/timegrid'],
+            'vendor-xyflow':   ['@xyflow/react'],
           },
         },
       },