diff --git a/package.json b/package.json
index cf007b6..fba34a1 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
   },
   "peerDependencies": {
     "typescript": "3.x || 4.x || 5.x",
-    "vitest": ">=0.34.0"
+    "vitest": ">=0.34.0 || >=1.0.0"
   },
   "author": "Eike Lurz<eike.lurz@tuta.io>",
   "license": "MIT"