diff --git a/context.go b/context.go
index d246ce3..6479a69 100644
--- a/context.go
+++ b/context.go
@@ -23,7 +23,7 @@ import (
 	"github.com/fenthope/reco"
 	"github.com/go-json-experiment/json"
 
-	"github.com/WJQSERVER-STUDIO/go-utils/iox"
+	"github.com/WJQSERVER-STUDIO/go-utils/copyb"
 	"github.com/WJQSERVER-STUDIO/httpc"
 )
 
@@ -271,13 +271,6 @@ func (c *Context) String(code int, format string, values ...interface{}) {
 	c.Writer.Write([]byte(fmt.Sprintf(format, values...)))
 }
 
-// Text 向响应写入无需格式化的string
-func (c *Context) Text(code int, text string) {
-	c.Writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
-	c.Writer.WriteHeader(code)
-	c.Writer.Write([]byte(text))
-}
-
 // JSON 向响应写入 JSON 数据
 // 设置 Content-Type 为 application/json
 func (c *Context) JSON(code int, obj interface{}) {
@@ -431,7 +424,7 @@ func (c *Context) WriteStream(reader io.Reader) (written int64, err error) {
 		c.Writer.WriteHeader(http.StatusOK) // 默认 200 OK
 	}
 
-	written, err = iox.Copy(c.Writer, reader) // 从 reader 读取并写入 ResponseWriter
+	written, err = copyb.Copy(c.Writer, reader) // 从 reader 读取并写入 ResponseWriter
 	if err != nil {
 		c.AddError(fmt.Errorf("failed to write stream: %w", err))
 	}
@@ -471,7 +464,7 @@ func (c *Context) GetReqBodyFull() ([]byte, error) {
 		}()
 	}
 
-	data, err := iox.ReadAll(limitBytesReader)
+	data, err := copyb.ReadAll(limitBytesReader)
 	if err != nil {
 		c.AddError(fmt.Errorf("failed to read request body: %w", err))
 		return nil, fmt.Errorf("failed to read request body: %w", err)
@@ -505,7 +498,7 @@ func (c *Context) GetReqBodyBuffer() (*bytes.Buffer, error) {
 		}()
 	}
 
-	data, err := iox.ReadAll(limitBytesReader)
+	data, err := copyb.ReadAll(limitBytesReader)
 	if err != nil {
 		c.AddError(fmt.Errorf("failed to read request body: %w", err))
 		return nil, fmt.Errorf("failed to read request body: %w", err)
@@ -678,7 +671,7 @@ func (c *Context) SetBodyStream(reader io.Reader, contentSize int) {
 
 	// 将 reader 的内容直接复制到 ResponseWriter
 	// ResponseWriter 实现了 io.Writer 接口
-	_, err := iox.Copy(c.Writer, reader)
+	_, err := copyb.Copy(c.Writer, reader)
 	if err != nil {
 		c.AddError(fmt.Errorf("failed to write stream: %w", err))
 		// 注意：这里可能无法设置错误状态码，因为头部可能已经发送
@@ -737,7 +730,7 @@ func (c *Context) SetRespBodyFile(code int, filePath string) {
 	c.Writer.WriteHeader(code)
 
 	// 将文件内容写入响应体
-	_, err = iox.Copy(c.Writer, file)
+	_, err = copyb.Copy(c.Writer, file)
 	if err != nil {
 		c.AddError(fmt.Errorf("failed to write file %s to response: %w", cleanPath, err))
 		// 注意：这里可能无法设置错误状态码，因为头部可能已经发送
diff --git a/go.mod b/go.mod
index 6b14b15..a3af682 100644
--- a/go.mod
+++ b/go.mod
@@ -3,14 +3,10 @@ module github.com/infinite-iroha/touka
 go 1.24.4
 
 require (
-	github.com/WJQSERVER-STUDIO/go-utils/iox v0.0.2
-	github.com/WJQSERVER-STUDIO/httpc v0.8.1
+	github.com/WJQSERVER-STUDIO/go-utils/copyb v0.0.6
+	github.com/WJQSERVER-STUDIO/httpc v0.8.0
 	github.com/fenthope/reco v0.0.3
 	github.com/go-json-experiment/json v0.0.0-20250714165856-be8212f5270d
 )
 
-require (
-	github.com/WJQSERVER-STUDIO/go-utils/copyb v0.0.6 // indirect
-	github.com/valyala/bytebufferpool v1.0.0 // indirect
-	golang.org/x/net v0.42.0 // indirect
-)
+require github.com/valyala/bytebufferpool v1.0.0 // indirect
diff --git a/go.sum b/go.sum
index 0302b36..896c53c 100644
--- a/go.sum
+++ b/go.sum
@@ -1,14 +1,10 @@
 github.com/WJQSERVER-STUDIO/go-utils/copyb v0.0.6 h1:/50VJYXd6jcu+p5BnEBDyiX0nAyGxas1W3DCnrYMxMY=
 github.com/WJQSERVER-STUDIO/go-utils/copyb v0.0.6/go.mod h1:FZ6XE+4TKy4MOfX1xWKe6Rwsg0ucYFCdNh1KLvyKTfc=
-github.com/WJQSERVER-STUDIO/go-utils/iox v0.0.2 h1:AiIHXP21LpK7pFfqUlUstgQEWzjbekZgxOuvVwiMfyM=
-github.com/WJQSERVER-STUDIO/go-utils/iox v0.0.2/go.mod h1:mCLqYU32bTmEE6dpj37MKKiZgz70Jh/xyK9vVbq6pok=
-github.com/WJQSERVER-STUDIO/httpc v0.8.1 h1:/eG8aYKL3WfQILIRbG+cbzQjPkNHEPTqfGUdQS5rtI4=
-github.com/WJQSERVER-STUDIO/httpc v0.8.1/go.mod h1:mxXBf2hqbQGNHkVy/7wfU7Xi2s09MyZpbY2hyR+4uD4=
+github.com/WJQSERVER-STUDIO/httpc v0.8.0 h1:G7inJ5EEsg5+BkeFiNIo/6+Mj7Ygiq85yMT3Ld7frJY=
+github.com/WJQSERVER-STUDIO/httpc v0.8.0/go.mod h1:50297rvgppmgPbZEtWzTWgkomoqPREkGy9T3Y/NqN7o=
 github.com/fenthope/reco v0.0.3 h1:RmnQ0D9a8PWtwOODawitTe4BztTnS9wYwrDbipISNq4=
 github.com/fenthope/reco v0.0.3/go.mod h1:mDkGLHte5udWTIcjQTxrABRcf56SSdxBOCLgrRDwI/Y=
 github.com/go-json-experiment/json v0.0.0-20250714165856-be8212f5270d h1:+d6m5Bjvv0/RJct1VcOw2P5bvBOGjENmxORJYnSYDow=
 github.com/go-json-experiment/json v0.0.0-20250714165856-be8212f5270d/go.mod h1:TiCD2a1pcmjd7YnhGH0f/zKNcCD06B029pHhzV23c2M=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
-golang.org/x/net v0.42.0 h1:jzkYrhi3YQWD6MLBJcsklgQsoAcw89EcZbJw8Z614hs=
-golang.org/x/net v0.42.0/go.mod h1:FF1RA5d3u7nAYA4z2TkclSCKh68eSXtiFwcWQpPXdt8=