diff --git a/package.json b/package.json
index 3f181ff..76c14f0 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   },
   "main": "./lib/passport-wsfed-saml2",
   "dependencies": {
-    "cryptiles": "~0.2.2",
+    "cryptiles": "^4.1.3",
     "ejs": "2.5.5",
     "jsonwebtoken": "~5.0.4",
     "passport-strategy": "^1.0.0",