diff --git a/helpers.go b/helpers.go
index 25bdc0f..9e121ff 100644
--- a/helpers.go
+++ b/helpers.go
@@ -48,6 +48,6 @@ func (b *BaseClient) decodeResponse(response []byte) (any, error) {
 			Message: "Can't decode response",
 			Pairs:   map[string]interface{}{"error": "unknown response type"},
 		})
-		return nil, fmt.Errorf("Can't decode response - unknown response type specified")
+		return nil, fmt.Errorf("can't decode response - unknown response type specified")
 	}
 }
diff --git a/logging/logger_bench_test.go b/logging/logger_bench_test.go
index 9d92425..8afd2c3 100644
--- a/logging/logger_bench_test.go
+++ b/logging/logger_bench_test.go
@@ -58,11 +58,11 @@ func Benchmark_NewLogger(b *testing.B) {
 				got := New()
 
 				if tt.triggers.ModFormat.Format != "" {
-					got = got.SetFormat(tt.triggers.ModFormat.Format)
+					got.SetFormat(tt.triggers.ModFormat.Format)
 				}
 
 				if tt.triggers.ModLevel.Level != 0 {
-					got = got.SetMinLogLevel(tt.triggers.ModLevel.Level)
+					got.SetMinLogLevel(tt.triggers.ModLevel.Level)
 				}
 			}
 		})
diff --git a/logging/logger_test.go b/logging/logger_test.go
index 5f3cab5..2821f97 100644
--- a/logging/logger_test.go
+++ b/logging/logger_test.go
@@ -3,7 +3,6 @@ package libpack_logger
 import (
 	"bytes"
 	"fmt"
-	"os"
 	"testing"
 	"time"
 
@@ -11,30 +10,6 @@ import (
 	"github.com/goccy/go-reflect"
 )
 
-func captureStderr(f func()) string {
-	originalStderr := os.Stderr
-	r, w, _ := os.Pipe()
-	os.Stderr = w
-	f()
-	w.Close()
-	var buf bytes.Buffer
-	buf.ReadFrom(r)
-	os.Stderr = originalStderr
-	return buf.String()
-}
-
-func captureStdOut(f func()) string {
-	originalStdout := os.Stdout
-	r, w, _ := os.Pipe()
-	os.Stdout = w
-	f()
-	w.Close()
-	var buf bytes.Buffer
-	buf.ReadFrom(r)
-	os.Stdout = originalStdout
-	return buf.String()
-}
-
 func (suite *LoggerTestSuite) Test_LogMessageString() {
 	msg := &LogMessage{
 		Message: "test message",
diff --git a/mock_server.go b/mock_server.go
index 9fed6bb..8a377a0 100644
--- a/mock_server.go
+++ b/mock_server.go
@@ -3,7 +3,7 @@ package gql
 
 import (
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"strings"
@@ -15,7 +15,7 @@ func StartMockServer() *httptest.Server {
 	// Create your handler
 	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		// Your existing handler code
-		bodyBytes, err := ioutil.ReadAll(r.Body)
+		bodyBytes, err := io.ReadAll(r.Body)
 		if err != nil {
 			w.WriteHeader(http.StatusInternalServerError)
 			return