diff --git a/package.json b/package.json
index bbf1f2d..13971fd 100644
--- a/package.json
+++ b/package.json
@@ -37,8 +37,8 @@
     "steed": "^1.1.3"
   },
   "devDependencies": {
-    "fastify": "^3.0.0-alpha.1",
-    "fastify-cookie": "^3.5.0",
+    "fastify": "^3.0.0-rc.3",
+    "fastify-cookie": "^4.0.1",
     "standard": "^14.0.2",
     "tap": "^14.10.7",
     "tsd": "^0.11.0",