diff --git a/packages/backend-common/src/reading/ReadUrlResponseFactory.test.ts b/packages/backend-common/src/reading/ReadUrlResponseFactory.test.ts
index 880ab6f1d7..1eb18f5c1d 100644
--- a/packages/backend-common/src/reading/ReadUrlResponseFactory.test.ts
+++ b/packages/backend-common/src/reading/ReadUrlResponseFactory.test.ts
@@ -78,7 +78,9 @@ describe('ReadUrlResponseFactory', () => {
     let readable: NodeJS.ReadableStream;
 
     beforeEach(() => {
-      readable = new Stream({ encoding: 'utf-8' }) as NodeJS.ReadableStream;
+      readable = new Stream({
+        encoding: 'utf-8',
+      }) as unknown as NodeJS.ReadableStream;
       readable.readable = true;
 
       // Write data asynchronously, as soon as possible.