diff --git a/package.json b/package.json
index 281619d19..46d8af6d9 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
 		"@types/is-url": "1.2.28",
 		"@types/js-yaml": "3.11.4",
 		"@types/katex": "0.5.0",
-		"@types/koa": "2.0.47",
+		"@types/koa": "2.0.48",
 		"@types/koa-bodyparser": "5.0.2",
 		"@types/koa-compress": "2.0.8",
 		"@types/koa-favicon": "2.0.19",