diff --git a/src/index.tsx b/src/index.tsx
index 8069225..dc0cfac 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -64,7 +64,7 @@ export const emailServer = new SMTPServer({
     });
     for (const path of paths) {
       const xml = await new xml2js.Parser().parseStringPromise(
-        fs.readFileSync(path).toString()
+        fs.readFileSync(path, "utf8")
       );
       xml.feed.updated = now();
       if (xml.feed.entry === undefined) xml.feed.entry = [];
diff --git a/src/test.ts b/src/test.ts
index 3960b8c..04cd386 100644
--- a/src/test.ts
+++ b/src/test.ts
@@ -72,5 +72,5 @@ async function createFeed(): Promise<string> {
 }
 
 function readFeed(token: string): string {
-  return fs.readFileSync(feedPath(token)).toString();
+  return fs.readFileSync(feedPath(token), "utf8");
 }