diff --git a/package.json b/package.json
index 0af92dc..4fc48e8 100644
--- a/package.json
+++ b/package.json
@@ -27,12 +27,12 @@
   },
   "homepage": "https://github.com/lependu/fastify-nodemailer#readme",
   "devDependencies": {
-    "fastify": "next",
+    "fastify": "^2.1.0",
     "standard": "^12.0.1",
-    "tap": "^12.1.1"
+    "tap": "^12.6.1"
   },
   "dependencies": {
-    "fastify-plugin": "^1.4.0",
+    "fastify-plugin": "^1.5.0",
     "nodemailer": "^6.0.0"
   }
 }