diff --git a/README.md b/README.md
index eff347e..b520070 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ If you do not provide the client by yourself (see below), the URL option is *req
 ## Install
 
 ```
-npm i @fastify/mongodb
+npm i @fastify/mongodb mongodb
 ```
 
 ## Usage
diff --git a/package.json b/package.json
index da60730..0ad7b5c 100644
--- a/package.json
+++ b/package.json
@@ -35,13 +35,16 @@
     "@fastify/pre-commit": "^2.1.0",
     "@types/node": "^22.0.0",
     "fastify": "^5.0.0-alpha.4",
+    "mongodb": "^6.5.0",
     "standard": "^17.1.0",
     "tap": "^18.7.1",
     "tsd": "^0.31.0"
   },
   "dependencies": {
-    "fastify-plugin": "^5.0.0",
-    "mongodb": "^6.5.0"
+    "fastify-plugin": "^5.0.0"
+  },
+  "peerDependencies": {
+    "mongodb": "^6"
   },
   "publishConfig": {
     "access": "public"