diff --git a/index.js b/index.js
index 84ee6b1..29e6949 100644
--- a/index.js
+++ b/index.js
@@ -28,7 +28,7 @@ function fastifyRequestContext(fastify, opts, next) {
   const hook = opts.hook || 'onRequest'
   const hasDefaultStoreValuesFactory = typeof opts.defaultStoreValues === 'function'
 
-  fastify.addHook(hook, (req, res, done) => {
+  fastify.addHook(hook, (req, _res, done) => {
     const defaultStoreValues = hasDefaultStoreValuesFactory
       ? opts.defaultStoreValues(req)
       : opts.defaultStoreValues
@@ -48,7 +48,7 @@ function fastifyRequestContext(fastify, opts, next) {
   // in a different async context, as req/res may emit events in a different context.
   // Related to https://github.com/nodejs/node/issues/34430 and https://github.com/nodejs/node/issues/33723
   if (hook === 'onRequest' || hook === 'preParsing') {
-    fastify.addHook('preValidation', (req, res, done) => {
+    fastify.addHook('preValidation', (req, _res, done) => {
       const asyncResource = req[asyncResourceSymbol]
       asyncResource.runInAsyncScope(done, req.raw)
     })
diff --git a/test/internal/appInitializer.js b/test/internal/appInitializer.js
index 1cc60c4..b7db375 100644
--- a/test/internal/appInitializer.js
+++ b/test/internal/appInitializer.js
@@ -24,7 +24,7 @@ function initAppPostWithPrevalidation(endpoint) {
   const app = fastify({ logger: true })
   app.register(fastifyRequestContext, { hook: 'preValidation' })
 
-  const preValidationFn = (req, reply, done) => {
+  const preValidationFn = (req, _reply, done) => {
     const requestId = Number.parseInt(req.body.requestId)
     req.requestContext.set('testKey', `testValue${requestId}`)
     done()
@@ -44,30 +44,30 @@ function initAppPostWithAllPlugins(endpoint, requestHook) {
   const app = fastify({ logger: true })
   app.register(fastifyRequestContext, { hook: requestHook })
 
-  app.addHook('onRequest', (req, reply, done) => {
+  app.addHook('onRequest', (req, _reply, done) => {
     req.requestContext.set('onRequest', 'dummy')
     done()
   })
 
-  app.addHook('preParsing', (req, reply, payload, done) => {
+  app.addHook('preParsing', (req, _reply, payload, done) => {
     req.requestContext.set('preParsing', 'dummy')
     done(null, payload)
   })
 
-  app.addHook('preValidation', (req, reply, done) => {
+  app.addHook('preValidation', (req, _reply, done) => {
     const requestId = Number.parseInt(req.body.requestId)
     req.requestContext.set('preValidation', requestId)
     req.requestContext.set('testKey', `testValue${requestId}`)
     done()
   })
 
-  app.addHook('preHandler', (req, reply, done) => {
+  app.addHook('preHandler', (req, _reply, done) => {
     const requestId = Number.parseInt(req.body.requestId)
     req.requestContext.set('preHandler', requestId)
     done()
   })
 
-  app.addHook('preSerialization', (req, reply, payload, done) => {
+  app.addHook('preSerialization', (req, _reply, payload, done) => {
     const onRequestValue = req.requestContext.get('onRequest')
     const preValidationValue = req.requestContext.get('preValidation')
     done(null, {
diff --git a/types/index.test-d.ts b/types/index.test-d.ts
index d0f88e1..c9bfbd0 100644
--- a/types/index.test-d.ts
+++ b/types/index.test-d.ts
@@ -56,8 +56,8 @@ expectAssignable<RequestContextDataFactory>((req) => ({
   log: req.log.child({ childLog: true }),
 }))
 
-expectError<RequestContextDataFactory>((req) => ({ bar: 'dummy' }))
-expectError<RequestContextDataFactory>((req) => ({ log: 'dummy' }))
+expectError<RequestContextDataFactory>(() => ({ bar: 'dummy' }))
+expectError<RequestContextDataFactory>(() => ({ log: 'dummy' }))
 
 expectType<RequestContext>(app.requestContext)
 expectType<RequestContext>(requestContext)