diff --git a/lib/utils/generate_asset_cache.js b/lib/utils/generate_asset_cache.js
index 607a11c..35c792a 100644
--- a/lib/utils/generate_asset_cache.js
+++ b/lib/utils/generate_asset_cache.js
@@ -59,10 +59,10 @@ function generate_service_worker(chunk_files) {
 	}]`;
 
 	return read('templates/service-worker.js')
-		.replace('__timestamp__', Date.now())
-		.replace('__assets__', JSON.stringify(assets))
-		.replace('__shell__', JSON.stringify(chunk_files.concat('/index.html')))
-		.replace('__routes__', route_code);
+		.replace(/__timestamp__/g, Date.now())
+		.replace(/__assets__/g, JSON.stringify(assets))
+		.replace(/__shell__/g, JSON.stringify(chunk_files.concat('/index.html')))
+		.replace(/__routes__/g, route_code);
 }
 
 function generate_index(main_file) {