diff --git a/examples/server/auth-middleware/go.mod b/examples/server/auth-middleware/go.mod
index f1b65d2b..f1ca77fa 100644
--- a/examples/server/auth-middleware/go.mod
+++ b/examples/server/auth-middleware/go.mod
@@ -8,7 +8,7 @@ require (
 )
 
 require (
-	github.com/google/jsonschema-go v0.2.1 // indirect
+	github.com/google/jsonschema-go v0.2.3 // indirect
 	github.com/yosida95/uritemplate/v3 v3.0.2 // indirect
 )
 
diff --git a/examples/server/auth-middleware/go.sum b/examples/server/auth-middleware/go.sum
index ada94c0c..6a392638 100644
--- a/examples/server/auth-middleware/go.sum
+++ b/examples/server/auth-middleware/go.sum
@@ -2,8 +2,8 @@ github.com/golang-jwt/jwt/v5 v5.2.2 h1:Rl4B7itRWVtYIHFrSNd7vhTiz9UpLdi6gZhZ3wEeD
 github.com/golang-jwt/jwt/v5 v5.2.2/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
-github.com/google/jsonschema-go v0.2.1 h1:Z3iINWAUmvS4+m9cMP5lWbn6WlX8Hy4rpUS4pULVliQ=
-github.com/google/jsonschema-go v0.2.1/go.mod h1:r5quNTdLOYEz95Ru18zA0ydNbBuYoo9tgaYcxEYhJVE=
+github.com/google/jsonschema-go v0.2.3 h1:dkP3B96OtZKKFvdrUSaDkL+YDx8Uw9uC4Y+eukpCnmM=
+github.com/google/jsonschema-go v0.2.3/go.mod h1:r5quNTdLOYEz95Ru18zA0ydNbBuYoo9tgaYcxEYhJVE=
 github.com/yosida95/uritemplate/v3 v3.0.2 h1:Ed3Oyj9yrmi9087+NczuL5BwkIc4wvTb5zIM+UJPGz4=
 github.com/yosida95/uritemplate/v3 v3.0.2/go.mod h1:ILOh0sOhIJR3+L/8afwt/kE++YT040gmv5BQTMR2HP4=
 golang.org/x/tools v0.34.0 h1:qIpSLOxeCYGg9TrcJokLBG4KFA6d795g0xkBkiESGlo=
diff --git a/examples/server/rate-limiting/go.mod b/examples/server/rate-limiting/go.mod
index 8dd2f808..91d3d269 100644
--- a/examples/server/rate-limiting/go.mod
+++ b/examples/server/rate-limiting/go.mod
@@ -8,7 +8,7 @@ require (
 )
 
 require (
-	github.com/google/jsonschema-go v0.2.1 // indirect
+	github.com/google/jsonschema-go v0.2.3 // indirect
 	github.com/yosida95/uritemplate/v3 v3.0.2 // indirect
 )
 
diff --git a/examples/server/rate-limiting/go.sum b/examples/server/rate-limiting/go.sum
index 9e6a390e..da49fd16 100644
--- a/examples/server/rate-limiting/go.sum
+++ b/examples/server/rate-limiting/go.sum
@@ -1,7 +1,7 @@
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
-github.com/google/jsonschema-go v0.2.1 h1:Z3iINWAUmvS4+m9cMP5lWbn6WlX8Hy4rpUS4pULVliQ=
-github.com/google/jsonschema-go v0.2.1/go.mod h1:r5quNTdLOYEz95Ru18zA0ydNbBuYoo9tgaYcxEYhJVE=
+github.com/google/jsonschema-go v0.2.3 h1:dkP3B96OtZKKFvdrUSaDkL+YDx8Uw9uC4Y+eukpCnmM=
+github.com/google/jsonschema-go v0.2.3/go.mod h1:r5quNTdLOYEz95Ru18zA0ydNbBuYoo9tgaYcxEYhJVE=
 github.com/yosida95/uritemplate/v3 v3.0.2 h1:Ed3Oyj9yrmi9087+NczuL5BwkIc4wvTb5zIM+UJPGz4=
 github.com/yosida95/uritemplate/v3 v3.0.2/go.mod h1:ILOh0sOhIJR3+L/8afwt/kE++YT040gmv5BQTMR2HP4=
 golang.org/x/time v0.12.0 h1:ScB/8o8olJvc+CQPWrK3fPZNfh7qgwCrY0zJmoEQLSE=
diff --git a/internal/testing/fake_auth_server.go b/internal/testing/fake_auth_server.go
index 225f649c..79fafe4e 100644
--- a/internal/testing/fake_auth_server.go
+++ b/internal/testing/fake_auth_server.go
@@ -1,3 +1,7 @@
+// Copyright 2025 The Go MCP SDK Authors. All rights reserved.
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
 package testing
 
 import (
@@ -24,12 +28,6 @@ type authCodeInfo struct {
 	redirectURI   string
 }
 
-// // FakeAuthServer is a fake OAuth2 authorization server.
-// type FakeAuthServer struct {
-// 	server    *http.Server
-// 	authCodes map[string]authCodeInfo
-// }
-
 type state struct {
 	authCodes map[string]authCodeInfo
 }