diff --git a/package.json b/package.json
index 33a4aa1c..4e5d0d2b 100644
--- a/package.json
+++ b/package.json
@@ -124,7 +124,7 @@
     "stylus": "^0.55.0",
     "sugarss": "^2.0.0",
     "svelte": "^3.23.0",
-    "typescript": "^4.5.2"
+    "typescript": "^3.9.5 || ^4.0.0"
   },
   "peerDependenciesMeta": {
     "@babel/core": {