diff --git a/app/layout.tsx b/app/layout.tsx
index 5aab01d..c827250 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -6,6 +6,10 @@ const display = Big_Shoulders({
   variable: "--font-display",
   subsets: ["latin"],
   weight: ["600", "700", "800", "900"],
+  // Next.js/Turbopack has no bundled fallback-metric data for this family
+  // (a known upstream gap, harmless either way) — an explicit fallback list
+  // skips the auto-lookup that produces the build warning.
+  fallback: ["system-ui", "sans-serif"],
 });
 
 const mono = IBM_Plex_Mono({