diff --git a/src/browser_app_skeleton/package.json.ecr b/src/browser_app_skeleton/package.json.ecr
index 3a64c995..bd03207b 100644
--- a/src/browser_app_skeleton/package.json.ecr
+++ b/src/browser_app_skeleton/package.json.ecr
@@ -4,7 +4,7 @@
   "type": "module",
   "dependencies": {
     "@rails/ujs": "^7.1.0",
-    "modern-normalize": "^2.0.0"
+    "modern-normalize": "^3.0.1"
   },
   "scripts": {
     "heroku-postbuild": "yarn build",
@@ -14,9 +14,9 @@
     "watch": "vite build --watch"
   },
   "devDependencies": {
-    "sass": "^1.69.5",
-    "vite": "^5.0.0",
+    "sass": "^1.97.2",
+    "vite": "^7.3.1",
     "vite-plugin-compression": "^0.5.1",
-    "vite-plugin-dev-manifest": "^1.2.1"
+    "vite-plugin-dev-manifest": "^1.4.1"
   }
 }
\ No newline at end of file
diff --git a/src/web_app_skeleton/config/server.cr.ecr b/src/web_app_skeleton/config/server.cr.ecr
index bdd6867e..48d04b2a 100644
--- a/src/web_app_skeleton/config/server.cr.ecr
+++ b/src/web_app_skeleton/config/server.cr.ecr
@@ -65,4 +65,4 @@ end
 private def raise_missing_secret_key_in_production
   puts "Please set the SECRET_KEY_BASE environment variable. You can generate a secret key with 'lucky gen.secret_key'".colorize.red
   exit(1)
-end
\ No newline at end of file
+end
diff --git a/src/web_app_skeleton/script/setup.cr.ecr b/src/web_app_skeleton/script/setup.cr.ecr
index ee90949f..0fcdb517 100644
--- a/src/web_app_skeleton/script/setup.cr.ecr
+++ b/src/web_app_skeleton/script/setup.cr.ecr
@@ -10,6 +10,9 @@ print_done
 notice "Installing node dependencies"
 run_command "yarn", "install", "--no-progress"
 
+notice "Building initial asset manifest"
+run_command "yarn", "build"
+
 print_done
 <%- end -%>
 
diff --git a/src/web_app_skeleton/src/app.cr.ecr b/src/web_app_skeleton/src/app.cr.ecr
index 2f9f817b..9780afbb 100644
--- a/src/web_app_skeleton/src/app.cr.ecr
+++ b/src/web_app_skeleton/src/app.cr.ecr
@@ -5,9 +5,9 @@ require "./shards"
 # In development, vite-plugin-dev-manifest creates public/manifest.dev.json
 # In production, Vite creates public/.vite/manifest.json
 # The manifest path is determined by which file exists at compile time
-{% if File.exists?("public/manifest.dev.json") %}
+{% if file_exists?("public/manifest.dev.json") %}
   Lucky::AssetHelpers.load_manifest "public/manifest.dev.json", use_vite: true
-{% elsif File.exists?("public/.vite/manifest.json") %}
+{% elsif file_exists?("public/.vite/manifest.json") %}
   Lucky::AssetHelpers.load_manifest "public/.vite/manifest.json", use_vite: true
 {% else %}
   # For initial compilation, we'll assume development mode
@@ -38,4 +38,4 @@ require "./components/**"
 require "./pages/**"
 <%- end -%>
 require "../db/migrations/**"
-require "./app_server"
\ No newline at end of file
+require "./app_server"