Fix CI

sindresorhus · sindresorhus · commit efb19423b8ad · 2021-08-06T14:44:29.000+02:00
diff --git a/package.json b/package.json
@@ -59,6 +59,7 @@
 		"ava": "^2.4.0",
 		"matcha": "^0.7.0",
 		"tsd": "^0.17.0",
+		"typescript": "^4.3.5",
 		"xo": "^0.36.1"
 	},
 	"xo": {
