diff --git a/src/url_utils.ts b/src/url_utils.ts
index 8c63279..33d5c16 100644
--- a/src/url_utils.ts
+++ b/src/url_utils.ts
@@ -87,7 +87,7 @@ export function getIndexUrl(baseUrl: URL): URL {
  * ```
  */
 export function getSourceUrl(filePath: string, baseUrl: URL): URL {
-	if (filePath === '/') {
+	if (filePath === '/' || filePath === './') {
 		return getIndexUrl(baseUrl)
 	}