diff --git a/packages/misskey-js/src/@types/ms.d.ts b/packages/misskey-js/src/@types/ms.d.ts
new file mode 100644
index 0000000000..dcdb3897cc
--- /dev/null
+++ b/packages/misskey-js/src/@types/ms.d.ts
@@ -0,0 +1,5 @@
+// d.tsが提供されているのに読み込まない 謎
+declare module 'ms' {
+    type TODO = any;
+    export default function(...x: any): TODO;
+}