diff --git a/dump.go b/dump.go
index ff36c56..ff17ab4 100644
--- a/dump.go
+++ b/dump.go
@@ -8,18 +8,24 @@ import (
 
 type bodyWriter struct {
 	gin.ResponseWriter
-	body *bytes.Buffer
+	body    *bytes.Buffer
+	maxSize int
 }
 
 // implements gin.ResponseWriter
 func (w bodyWriter) Write(b []byte) (int, error) {
-	w.body.Write(b)
+	if w.body.Len()+len(b) > w.maxSize {
+		w.body.Write(b[:w.maxSize-w.body.Len()])
+	} else {
+		w.body.Write(b)
+	}
 	return w.ResponseWriter.Write(b)
 }
 
-func newBodyWriter(writer gin.ResponseWriter) *bodyWriter {
+func newBodyWriter(writer gin.ResponseWriter, maxSize int) *bodyWriter {
 	return &bodyWriter{
 		body:           bytes.NewBufferString(""),
 		ResponseWriter: writer,
+		maxSize:        maxSize,
 	}
 }
diff --git a/middleware.go b/middleware.go
index f412657..153f6a1 100644
--- a/middleware.go
+++ b/middleware.go
@@ -20,6 +20,9 @@ const (
 )
 
 var (
+	RequestBodyMaxSize  = 64 * 1024 // 64KB
+	ResponseBodyMaxSize = 64 * 1024 // 64KB
+
 	HiddenRequestHeaders = map[string]struct{}{
 		"authorization": {},
 		"cookie":        {},
@@ -105,13 +108,17 @@ func NewWithConfig(logger *slog.Logger, config Config) gin.HandlerFunc {
 			buf, err := io.ReadAll(c.Request.Body)
 			if err == nil {
 				c.Request.Body = io.NopCloser(bytes.NewBuffer(buf))
-				reqBody = buf
+				if len(buf) > RequestBodyMaxSize {
+					reqBody = buf[:RequestBodyMaxSize]
+				} else {
+					reqBody = buf
+				}
 			}
 		}
 
 		// dump response body
 		if config.WithResponseBody {
-			c.Writer = newBodyWriter(c.Writer)
+			c.Writer = newBodyWriter(c.Writer, ResponseBodyMaxSize)
 		}
 
 		c.Next()