diff --git a/next.config.ts b/next.config.ts
index 324b07a..50f8b6f 100644
--- a/next.config.ts
+++ b/next.config.ts
@@ -5,6 +5,16 @@ const nextConfig: NextConfig = {
   turbopack: {
     root: process.cwd(),
   },
+  // Nix store is read-only at runtime; Next.js tries to mkdir
+  // <distDir>/cache/images for the on-disk image optimizer LRU and
+  // crashes with EACCES unhandledRejection on every optimized image
+  // request. Disable the disk cache (and disable ISR flush which gates it).
+  images: {
+    maximumDiskCacheSize: 0,
+  },
+  experimental: {
+    isrFlushToDisk: false,
+  },
 };
 
 export default nextConfig;