diff --git a/Build/lib/create-file.ts b/Build/lib/create-file.ts
index 79ee3d4a..7582dca2 100644
--- a/Build/lib/create-file.ts
+++ b/Build/lib/create-file.ts
@@ -86,5 +86,6 @@ export async function compareAndWriteFile(span: Span, linesA: string[], filePath
     }
 
     writeStream.end();
+    writeStream.close();
   });
 }