diff --git a/package.json b/package.json
index 9a359cd..782544b 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "strftime": "~0.10.0"
   },
   "devDependencies": {
-    "aegir": "^20.2.0",
+    "aegir": "^21.0.1",
     "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
     "dirty-chai": "^2.0.1"