diff --git a/otohttp/templates/client.go.plush b/otohttp/templates/client.go.plush
index 82f84c1..df8b539 100644
--- a/otohttp/templates/client.go.plush
+++ b/otohttp/templates/client.go.plush
@@ -8,7 +8,6 @@ import (
 	"context"
 	"encoding/json"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"strings"
 	"time"
@@ -97,7 +96,7 @@ func New<%= service.Name %>(client *Client) *<%= service.Name %> {
 		defer decodedBody.Close()
 		bodyReader = decodedBody
 	}
-	respBodyBytes, err := ioutil.ReadAll(bodyReader)
+	respBodyBytes, err := io.ReadAll(bodyReader)
 	if err != nil {
 		return nil, errors.Wrap(err, "<%= service.Name %>.<%= method.Name %>: read response body")
 	}