diff --git a/nginx.conf b/nginx.conf
index 095793d..1e5a5de 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -38,7 +38,7 @@ server {
     }
 
     # Hashed static assets — long-term cache is safe
-    location ~* \.[0-9a-f]{8}\.(js|css)$ {
+    location ~* \.[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]\.(js|css)$ {
         expires 30d;
         add_header Cache-Control "public, immutable";
     }