diff --git a/package.json b/package.json
index b32401d..8c1db46 100644
--- a/package.json
+++ b/package.json
@@ -150,7 +150,7 @@
     "uint8arraylist": "^2.0.0"
   },
   "devDependencies": {
-    "aegir": "^38.1.8",
+    "aegir": "^39.0.10",
     "it-all": "^3.0.1",
     "it-pair": "^2.0.6",
     "it-pipe": "^3.0.1",