diff --git a/rc.go b/rc.go
index 6271729..cc0140d 100644
--- a/rc.go
+++ b/rc.go
@@ -6,7 +6,6 @@ import (
 	"io"
 	"log/slog"
 	"net/http"
-	"net/http/httptest"
 	"os"
 	"strings"
 	"syscall"
@@ -241,7 +240,7 @@ func New(cacher Cacher, opts ...Option) func(next http.Handler) http.Handler {
 // HandlerToRequester converts http.Handler to func(*http.Request) (*http.Response, error).
 func HandlerToRequester(h http.Handler) func(*http.Request) (*http.Response, error) {
 	return func(req *http.Request) (*http.Response, error) {
-		rec := httptest.NewRecorder()
+		rec := newRecorder()
 		h.ServeHTTP(rec, req)
 		res := rec.Result()
 		res.Header = rec.Header()
@@ -249,6 +248,43 @@ func HandlerToRequester(h http.Handler) func(*http.Request) (*http.Response, err
 	}
 }
 
+type recorder struct {
+	statusCode int
+	header     http.Header
+	buf        *bytes.Buffer
+}
+
+var _ http.ResponseWriter = (*recorder)(nil)
+
+func newRecorder() *recorder {
+	return &recorder{
+		buf:    new(bytes.Buffer),
+		header: make(http.Header),
+	}
+}
+
+func (r *recorder) Header() http.Header {
+	return r.header
+}
+
+func (r *recorder) Write(b []byte) (int, error) {
+	return r.buf.Write(b)
+}
+
+func (r *recorder) WriteHeader(statusCode int) {
+	r.statusCode = statusCode
+}
+
+func (r *recorder) Result() *http.Response {
+	return &http.Response{
+		Status:        http.StatusText(r.statusCode),
+		StatusCode:    r.statusCode,
+		Header:        r.header.Clone(),
+		Body:          io.NopCloser(r.buf),
+		ContentLength: int64(r.buf.Len()),
+	}
+}
+
 func contains(s []string, e string) bool {
 	for _, v := range s {
 		if e == v {