diff --git a/internal/collector/domain_test.go b/internal/collector/domain_test.go
index 6a13d47..04dae6f 100644
--- a/internal/collector/domain_test.go
+++ b/internal/collector/domain_test.go
@@ -1,7 +1,7 @@
 package collector
 
 import (
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"regexp"
@@ -46,7 +46,7 @@ func testCollector(t *testing.T, collector prometheus.Collector, checker func(t
 
 	resp, err := http.Get(srv.URL)
 	is.NoErr(err) // expected no error
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	is.NoErr(err) // expected no error
 	checker(t, resp.StatusCode, string(body))
 }
diff --git a/internal/safeconfig/safeconfig.go b/internal/safeconfig/safeconfig.go
index f85945b..9506ca3 100644
--- a/internal/safeconfig/safeconfig.go
+++ b/internal/safeconfig/safeconfig.go
@@ -2,7 +2,7 @@ package safeconfig
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 
 	"github.com/rs/zerolog/log"
@@ -35,7 +35,7 @@ func (cfg *SafeConfig) Reload(pathToFile string) error {
 	}
 	log.Debug().Msgf("absolute path of config file is %s", filename)
 
-	yamlFile, err := ioutil.ReadFile(filename)
+	yamlFile, err := os.ReadFile(filename)
 	if err != nil {
 		return fmt.Errorf("failed to read file: %w", err)
 	}
diff --git a/internal/safeconfig/safeconfig_test.go b/internal/safeconfig/safeconfig_test.go
index 02798a8..b4f92a9 100644
--- a/internal/safeconfig/safeconfig_test.go
+++ b/internal/safeconfig/safeconfig_test.go
@@ -1,7 +1,6 @@
 package safeconfig
 
 import (
-	"io/ioutil"
 	"os"
 	"reflect"
 	"testing"
@@ -82,7 +81,7 @@ domains:
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			file, err := ioutil.TempFile(os.TempDir(), "temp.*.yaml")
+			file, err := os.CreateTemp(os.TempDir(), "temp.*.yaml")
 			if err != nil {
 				log.Fatal().Err(err)
 			}