diff --git a/package.json b/package.json
index 4c3ebba..a7413ae 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "protons": "^1.0.1",
     "rsa-pem-to-jwk": "^1.1.3",
     "tweetnacl": "^1.0.0",
-    "ursa-optional": "~0.9.10"
+    "ursa-optional": "~0.10.0"
   },
   "devDependencies": {
     "aegir": "^20.0.0",