diff --git a/v2/examples/chat/util.go b/v2/examples/chat/util.go
index 562fc149a..2dc74e6f7 100644
--- a/v2/examples/chat/util.go
+++ b/v2/examples/chat/util.go
@@ -2,7 +2,6 @@ package chat
 
 import (
 	"encoding/json"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -63,7 +62,7 @@ func LoadSchemaFromExamplesDirectoryWithinPkg() ([]byte, error) {
 	}
 
 	absolutePath := filepath.Join(strings.Split(wd, "pkg")[0], chatExampleDirectoryRelativePath, "schema.graphql")
-	return ioutil.ReadFile(absolutePath)
+	return os.ReadFile(absolutePath)
 }
 
 func GraphQLRequestForOperation(operation string) ([]byte, error) {
diff --git a/v2/examples/federation/gateway/datasource_poller.go b/v2/examples/federation/gateway/datasource_poller.go
index a2ecca602..f2fb0d15c 100644
--- a/v2/examples/federation/gateway/datasource_poller.go
+++ b/v2/examples/federation/gateway/datasource_poller.go
@@ -5,7 +5,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"strings"
@@ -206,7 +206,7 @@ func (d *DatasourcePollerPoller) fetchServiceSDL(ctx context.Context, serviceURL
 		Errors GQLErr `json:"errors,omitempty"`
 	}
 
-	bs, err := ioutil.ReadAll(resp.Body)
+	bs, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return "", fmt.Errorf("read bytes: %v", err)
 	}
diff --git a/v2/examples/kafka_pubsub/main.go b/v2/examples/kafka_pubsub/main.go
index a87df8935..90b68d753 100644
--- a/v2/examples/kafka_pubsub/main.go
+++ b/v2/examples/kafka_pubsub/main.go
@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"flag"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"math/rand"
 	"os"
@@ -102,7 +102,7 @@ func main() {
 
 	// Parse command line parameters
 	f := flag.NewFlagSet(os.Args[0], flag.ContinueOnError)
-	f.SetOutput(ioutil.Discard)
+	f.SetOutput(io.Discard)
 	f.BoolVar(&args.help, "h", false, "")
 	f.BoolVar(&args.help, "help", false, "")
 	f.StringVar(&args.products, "p", "", "")
diff --git a/v2/examples/kafka_pubsub/transactional_producer/main.go b/v2/examples/kafka_pubsub/transactional_producer/main.go
index 49ea2a633..b334cd067 100644
--- a/v2/examples/kafka_pubsub/transactional_producer/main.go
+++ b/v2/examples/kafka_pubsub/transactional_producer/main.go
@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"flag"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"math/rand"
 	"os"
@@ -57,7 +57,7 @@ func main() {
 
 	// Parse command line parameters
 	f := flag.NewFlagSet(os.Args[0], flag.ContinueOnError)
-	f.SetOutput(ioutil.Discard)
+	f.SetOutput(io.Discard)
 	f.BoolVar(&args.help, "h", false, "")
 	f.BoolVar(&args.help, "help", false, "")
 	f.BoolVar(&args.enableTransaction, "enable-transaction", false, "")
diff --git a/v2/internal/pkg/unsafeparser/unsafeparser.go b/v2/internal/pkg/unsafeparser/unsafeparser.go
index 1999aa91e..b115856e7 100644
--- a/v2/internal/pkg/unsafeparser/unsafeparser.go
+++ b/v2/internal/pkg/unsafeparser/unsafeparser.go
@@ -2,7 +2,7 @@
 package unsafeparser
 
 import (
-	"io/ioutil"
+	"os"
 
 	"github.com/wundergraph/graphql-go-tools/v2/pkg/ast"
 	"github.com/wundergraph/graphql-go-tools/v2/pkg/astparser"
@@ -26,7 +26,7 @@ func ParseGraphqlDocumentBytes(input []byte) ast.Document {
 }
 
 func ParseGraphqlDocumentFile(filePath string) ast.Document {
-	fileBytes, err := ioutil.ReadFile(filePath)
+	fileBytes, err := os.ReadFile(filePath)
 	if err != nil {
 		panic(err)
 	}
diff --git a/v2/pkg/astparser/parser_test.go b/v2/pkg/astparser/parser_test.go
index 1c8fafc00..95eb0ecd1 100644
--- a/v2/pkg/astparser/parser_test.go
+++ b/v2/pkg/astparser/parser_test.go
@@ -2,7 +2,7 @@ package astparser
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -2322,7 +2322,7 @@ func TestErrorReport(t *testing.T) {
 
 func TestParseStarwars(t *testing.T) {
 
-	starWarsSchema, err := ioutil.ReadFile("./testdata/starwars.schema.graphql")
+	starWarsSchema, err := os.ReadFile("./testdata/starwars.schema.graphql")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -2336,7 +2336,7 @@ func TestParseStarwars(t *testing.T) {
 func TestParseTodo(t *testing.T) {
 
 	inputFileName := "./testdata/todo.graphql"
-	schema, err := ioutil.ReadFile(inputFileName)
+	schema, err := os.ReadFile(inputFileName)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -2352,7 +2352,7 @@ func TestParseTodo(t *testing.T) {
 func BenchmarkParseStarwars(b *testing.B) {
 
 	inputFileName := "./testdata/starwars.schema.graphql"
-	starwarsSchema, err := ioutil.ReadFile(inputFileName)
+	starwarsSchema, err := os.ReadFile(inputFileName)
 	if err != nil {
 		b.Fatal(err)
 	}
@@ -2379,7 +2379,7 @@ func BenchmarkParseStarwars(b *testing.B) {
 func BenchmarkParseGithub(b *testing.B) {
 
 	inputFileName := "./testdata/github.schema.graphql"
-	schemaFile, err := ioutil.ReadFile(inputFileName)
+	schemaFile, err := os.ReadFile(inputFileName)
 	if err != nil {
 		b.Fatal(err)
 	}
diff --git a/v2/pkg/astprinter/astprinter_test.go b/v2/pkg/astprinter/astprinter_test.go
index b909b9cf2..0502f328a 100644
--- a/v2/pkg/astprinter/astprinter_test.go
+++ b/v2/pkg/astprinter/astprinter_test.go
@@ -2,7 +2,7 @@ package astprinter
 
 import (
 	"bytes"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/jensneuse/diffview"
@@ -533,7 +533,7 @@ func TestPrintSchemaDefinition(t *testing.T) {
 
 	goldie.Assert(t, "starwars_schema_definition", out)
 	if t.Failed() {
-		fixture, err := ioutil.ReadFile("./fixtures/starwars_schema_definition.golden")
+		fixture, err := os.ReadFile("./fixtures/starwars_schema_definition.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -557,7 +557,7 @@ func TestPrintOperationDefinition(t *testing.T) {
 
 	goldie.Assert(t, "introspectionquery", out)
 	if t.Failed() {
-		fixture, err := ioutil.ReadFile("./fixtures/introspectionquery.golden")
+		fixture, err := os.ReadFile("./fixtures/introspectionquery.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
diff --git a/v2/pkg/asttransform/baseschema_test.go b/v2/pkg/asttransform/baseschema_test.go
index e9b63860d..ccdcc2f9f 100644
--- a/v2/pkg/asttransform/baseschema_test.go
+++ b/v2/pkg/asttransform/baseschema_test.go
@@ -2,7 +2,7 @@ package asttransform_test
 
 import (
 	"bytes"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/jensneuse/diffview"
@@ -28,7 +28,7 @@ func runTestMerge(definition, fixtureName string) func(t *testing.T) {
 		got := buf.Bytes()
 		goldie.Assert(t, fixtureName, got)
 		if t.Failed() {
-			want, err := ioutil.ReadFile("./fixtures/" + fixtureName + ".golden")
+			want, err := os.ReadFile("./fixtures/" + fixtureName + ".golden")
 			if err != nil {
 				panic(err)
 			}
diff --git a/v2/pkg/astvalidation/reference/main.go b/v2/pkg/astvalidation/reference/main.go
index f07359b80..0580ccd66 100644
--- a/v2/pkg/astvalidation/reference/main.go
+++ b/v2/pkg/astvalidation/reference/main.go
@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
 	"log"
 	"os"
 	"path/filepath"
@@ -23,13 +22,13 @@ func main() {
 		workingDir = filepath.Join(currDir, "pkg/astvalidation/reference/__tests__")
 	}
 
-	dir, err := ioutil.ReadDir(workingDir)
+	dir, err := os.ReadDir(workingDir)
 	if err != nil {
 		log.Fatal(err)
 	}
 
 	replacementsPath := workingDir + "/../replacements.yml"
-	replacementContent, _ := ioutil.ReadFile(replacementsPath)
+	replacementContent, _ := os.ReadFile(replacementsPath)
 
 	var replacements []Replacement
 	if err := yaml.Unmarshal(replacementContent, &replacements); err != nil {
@@ -112,7 +111,7 @@ func skipRule(name string) bool {
 // processFile - convert and save reference test file
 func processFile(workingDir string, filename string, replacements Replacements) {
 	fPath := filepath.Join(workingDir, filename)
-	fileContent, _ := ioutil.ReadFile(fPath)
+	fileContent, _ := os.ReadFile(fPath)
 
 	testName := strings.TrimSuffix(strings.Split(filepath.Base(filename), ".")[0], "-test")
 
@@ -129,7 +128,7 @@ func processFile(workingDir string, filename string, replacements Replacements)
 	result := converter.iterateLines(testName, content)
 
 	outFileName := testName + "_test.go"
-	err := ioutil.WriteFile(filepath.Join(outDir, outFileName), []byte(result), os.ModePerm)
+	err := os.WriteFile(filepath.Join(outDir, outFileName), []byte(result), os.ModePerm)
 	if err != nil {
 		log.Fatal(err)
 	}
diff --git a/v2/pkg/astvalidation/reference/testsgo/harness_test.go b/v2/pkg/astvalidation/reference/testsgo/harness_test.go
index 57c2389e5..f1b5a3d7f 100644
--- a/v2/pkg/astvalidation/reference/testsgo/harness_test.go
+++ b/v2/pkg/astvalidation/reference/testsgo/harness_test.go
@@ -1,7 +1,7 @@
 package testsgo
 
 import (
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -314,7 +314,7 @@ func hasReportError(t *testing.T, report operationreport.Report) MessageCompare
 var testSchema string
 
 func init() {
-	content, err := ioutil.ReadFile("test_schema.graphql")
+	content, err := os.ReadFile("test_schema.graphql")
 	if err != nil {
 		panic(err)
 	}
diff --git a/v2/pkg/astvisitor/visitor_test.go b/v2/pkg/astvisitor/visitor_test.go
index 910301f5a..976ebd6d6 100644
--- a/v2/pkg/astvisitor/visitor_test.go
+++ b/v2/pkg/astvisitor/visitor_test.go
@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/jensneuse/diffview"
@@ -46,7 +46,7 @@ func TestVisitOperation(t *testing.T) {
 
 	if t.Failed() {
 
-		fixture, err := ioutil.ReadFile("./fixtures/visitor.golden")
+		fixture, err := os.ReadFile("./fixtures/visitor.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -125,7 +125,7 @@ func TestVisitSchemaDefinition(t *testing.T) {
 
 	if t.Failed() {
 
-		fixture, err := ioutil.ReadFile("./fixtures/schema_visitor.golden")
+		fixture, err := os.ReadFile("./fixtures/schema_visitor.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -185,7 +185,7 @@ func TestWalker_Path(t *testing.T) {
 
 	if t.Failed() {
 
-		fixture, err := ioutil.ReadFile("./fixtures/path.golden")
+		fixture, err := os.ReadFile("./fixtures/path.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -248,7 +248,7 @@ func TestVisitWithSkip(t *testing.T) {
 
 	if t.Failed() {
 
-		fixture, err := ioutil.ReadFile("./fixtures/visitor_skip.golden")
+		fixture, err := os.ReadFile("./fixtures/visitor_skip.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
diff --git a/v2/pkg/codegen/codegen_test.go b/v2/pkg/codegen/codegen_test.go
index 9d6764a31..bcf8d8c2c 100644
--- a/v2/pkg/codegen/codegen_test.go
+++ b/v2/pkg/codegen/codegen_test.go
@@ -2,7 +2,7 @@ package codegen
 
 import (
 	"bytes"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -94,7 +94,7 @@ func TestCodeGen_GenerateDirectiveDefinitionStruct(t *testing.T) {
 	goldie.Assert(t, "DataSource", data)
 	if t.Failed() {
 
-		fixture, err := ioutil.ReadFile("./fixtures/DataSource.golden")
+		fixture, err := os.ReadFile("./fixtures/DataSource.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
diff --git a/v2/pkg/graphql/execution_engine_v2.go b/v2/pkg/graphql/execution_engine_v2.go
index e727ebc21..4ebe2ad38 100644
--- a/v2/pkg/graphql/execution_engine_v2.go
+++ b/v2/pkg/graphql/execution_engine_v2.go
@@ -6,7 +6,7 @@ import (
 	"compress/gzip"
 	"context"
 	"errors"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strconv"
 	"sync"
@@ -96,7 +96,7 @@ func (e *EngineResultWriter) AsHTTPResponse(status int, headers http.Header) *ht
 	}
 
 	res := &http.Response{}
-	res.Body = ioutil.NopCloser(b)
+	res.Body = io.NopCloser(b)
 	res.Header = headers
 	res.StatusCode = status
 	res.ContentLength = int64(b.Len())
diff --git a/v2/pkg/graphql/execution_engine_v2_helpers_test.go b/v2/pkg/graphql/execution_engine_v2_helpers_test.go
index e92f6969c..8539e2187 100644
--- a/v2/pkg/graphql/execution_engine_v2_helpers_test.go
+++ b/v2/pkg/graphql/execution_engine_v2_helpers_test.go
@@ -3,7 +3,7 @@ package graphql
 import (
 	"bytes"
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"testing"
 
@@ -34,14 +34,14 @@ func createTestRoundTripper(t *testing.T, testCase roundTripperTestCase) testRou
 			var receivedBodyBytes []byte
 			if req.Body != nil {
 				var err error
-				receivedBodyBytes, err = ioutil.ReadAll(req.Body)
+				receivedBodyBytes, err = io.ReadAll(req.Body)
 				require.NoError(t, err)
 			}
 			require.Equal(t, testCase.expectedBody, string(receivedBodyBytes), "roundTripperTestCase body do not match")
 		}
 
 		body := bytes.NewBuffer([]byte(testCase.sendResponseBody))
-		return &http.Response{StatusCode: testCase.sendStatusCode, Body: ioutil.NopCloser(body)}
+		return &http.Response{StatusCode: testCase.sendStatusCode, Body: io.NopCloser(body)}
 	}
 }
 
diff --git a/v2/pkg/graphql/execution_engine_v2_test.go b/v2/pkg/graphql/execution_engine_v2_test.go
index e27467345..17b5d5a91 100644
--- a/v2/pkg/graphql/execution_engine_v2_test.go
+++ b/v2/pkg/graphql/execution_engine_v2_test.go
@@ -6,7 +6,7 @@ import (
 	"compress/gzip"
 	"context"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"sync"
@@ -44,7 +44,7 @@ func TestEngineResponseWriter_AsHTTPResponse(t *testing.T) {
 		headers := make(http.Header)
 		headers.Set("Content-Type", "application/json")
 		response := rw.AsHTTPResponse(http.StatusOK, headers)
-		body, err := ioutil.ReadAll(response.Body)
+		body, err := io.ReadAll(response.Body)
 		require.NoError(t, err)
 
 		assert.Equal(t, http.StatusOK, response.StatusCode)
@@ -71,7 +71,7 @@ func TestEngineResponseWriter_AsHTTPResponse(t *testing.T) {
 			reader, err := gzip.NewReader(response.Body)
 			require.NoError(t, err)
 
-			body, err := ioutil.ReadAll(reader)
+			body, err := io.ReadAll(reader)
 			require.NoError(t, err)
 
 			assert.Equal(t, `{"key": "value"}`, string(body))
@@ -86,7 +86,7 @@ func TestEngineResponseWriter_AsHTTPResponse(t *testing.T) {
 			assert.Equal(t, "deflate", response.Header.Get(httpclient.ContentEncodingHeader))
 
 			reader := flate.NewReader(response.Body)
-			body, err := ioutil.ReadAll(reader)
+			body, err := io.ReadAll(reader)
 			require.NoError(t, err)
 
 			assert.Equal(t, `{"key": "value"}`, string(body))
diff --git a/v2/pkg/graphql/request.go b/v2/pkg/graphql/request.go
index c834fe9b9..cf9c2cbb3 100644
--- a/v2/pkg/graphql/request.go
+++ b/v2/pkg/graphql/request.go
@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"errors"
 	"io"
-	"io/ioutil"
 	"net/http"
 
 	"github.com/wundergraph/graphql-go-tools/v2/pkg/ast"
@@ -47,7 +46,7 @@ type Request struct {
 }
 
 func UnmarshalRequest(reader io.Reader, request *Request) error {
-	requestBytes, err := ioutil.ReadAll(reader)
+	requestBytes, err := io.ReadAll(reader)
 	if err != nil {
 		return err
 	}
diff --git a/v2/pkg/graphql/schema.go b/v2/pkg/graphql/schema.go
index ee897acd5..0992daee5 100644
--- a/v2/pkg/graphql/schema.go
+++ b/v2/pkg/graphql/schema.go
@@ -3,7 +3,6 @@ package graphql
 import (
 	"bytes"
 	"io"
-	"io/ioutil"
 	"strings"
 
 	"github.com/wundergraph/graphql-go-tools/v2/pkg/ast"
@@ -59,7 +58,7 @@ func (s *Schema) calcHash() error {
 }
 
 func NewSchemaFromReader(reader io.Reader) (*Schema, error) {
-	schemaContent, err := ioutil.ReadAll(reader)
+	schemaContent, err := io.ReadAll(reader)
 	if err != nil {
 		return nil, err
 	}
diff --git a/v2/pkg/imports/graphql_file_test.go b/v2/pkg/imports/graphql_file_test.go
index 394b01023..a92b825c3 100644
--- a/v2/pkg/imports/graphql_file_test.go
+++ b/v2/pkg/imports/graphql_file_test.go
@@ -2,7 +2,7 @@ package imports
 
 import (
 	"bytes"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/jensneuse/diffview"
@@ -27,7 +27,7 @@ func TestGraphQLFile_Render(t *testing.T) {
 
 	goldie.Assert(t, "render_result", dump, true)
 	if t.Failed() {
-		fixture, err := ioutil.ReadFile("./fixtures/render_result.golden")
+		fixture, err := os.ReadFile("./fixtures/render_result.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
diff --git a/v2/pkg/imports/imports.go b/v2/pkg/imports/imports.go
index d3f0a1f40..4f513c351 100644
--- a/v2/pkg/imports/imports.go
+++ b/v2/pkg/imports/imports.go
@@ -3,7 +3,6 @@ package imports
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"regexp"
@@ -57,7 +56,7 @@ func (s *Scanner) scanFile(inputFilePath string) (*GraphQLFile, error) {
 
 	fileDir := filepath.Dir(relativeFilePath)
 
-	content, err := ioutil.ReadFile(inputFilePath)
+	content, err := os.ReadFile(inputFilePath)
 	if err != nil {
 		return nil, err
 	}
diff --git a/v2/pkg/imports/imports_test.go b/v2/pkg/imports/imports_test.go
index 8a45274a9..30b7d524e 100644
--- a/v2/pkg/imports/imports_test.go
+++ b/v2/pkg/imports/imports_test.go
@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"testing"
 
@@ -29,7 +29,7 @@ func TestScanner(t *testing.T) {
 
 	goldie.Assert(t, "scanner_result", dump, true)
 	if t.Failed() {
-		fixture, err := ioutil.ReadFile("./fixtures/scanner_result.golden")
+		fixture, err := os.ReadFile("./fixtures/scanner_result.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -52,7 +52,7 @@ func TestScanner_ScanRegex(t *testing.T) {
 
 	goldie.Assert(t, "scanner_regex", dump, true)
 	if t.Failed() {
-		fixture, err := ioutil.ReadFile("./fixtures/scanner_regex.golden")
+		fixture, err := os.ReadFile("./fixtures/scanner_regex.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -68,7 +68,7 @@ func TestScanner_ScanRegex(t *testing.T) {
 
 	goldie.Assert(t, "scanner_regex_render", buf.Bytes())
 	if t.Failed() {
-		fixture, err := ioutil.ReadFile("./fixtures/scanner_regex_render.golden")
+		fixture, err := os.ReadFile("./fixtures/scanner_regex_render.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
diff --git a/v2/pkg/introspection/converter_test.go b/v2/pkg/introspection/converter_test.go
index b683e2348..2756dbff7 100644
--- a/v2/pkg/introspection/converter_test.go
+++ b/v2/pkg/introspection/converter_test.go
@@ -3,7 +3,7 @@ package introspection
 import (
 	"bytes"
 	"encoding/json"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/jensneuse/diffview"
@@ -16,7 +16,7 @@ import (
 )
 
 func TestJSONConverter_GraphQLDocument(t *testing.T) {
-	starwarsSchemaBytes, err := ioutil.ReadFile("./fixtures/starwars.golden")
+	starwarsSchemaBytes, err := os.ReadFile("./fixtures/starwars.golden")
 	require.NoError(t, err)
 
 	definition, report := astparser.ParseGraphqlDocumentBytes(starwarsSchemaBytes)
@@ -45,7 +45,7 @@ func TestJSONConverter_GraphQLDocument(t *testing.T) {
 
 	schemaOutputPretty := outWriter.Bytes()
 	// fmt.Println(string(schemaOutputPretty))
-	// ioutil.WriteFile("./fixtures/starwars_generated.graphql", schemaOutputPretty, os.ModePerm)
+	// os.WriteFile("./fixtures/starwars_generated.graphql", schemaOutputPretty, os.ModePerm)
 
 	// Ensure that recreated sdl is valid
 	definition, report = astparser.ParseGraphqlDocumentBytes(schemaOutputPretty)
@@ -56,7 +56,7 @@ func TestJSONConverter_GraphQLDocument(t *testing.T) {
 	// Check that recreated sdl is the same as original
 	goldie.Assert(t, "starwars", schemaOutputPretty)
 	if t.Failed() {
-		fixture, err := ioutil.ReadFile("./fixtures/starwars.golden")
+		fixture, err := os.ReadFile("./fixtures/starwars.golden")
 		require.NoError(t, err)
 
 		diffview.NewGoland().DiffViewBytes("startwars", fixture, schemaOutputPretty)
@@ -64,7 +64,7 @@ func TestJSONConverter_GraphQLDocument(t *testing.T) {
 }
 
 func BenchmarkJsonConverter_GraphQLDocument(b *testing.B) {
-	introspectedBytes, err := ioutil.ReadFile("./testdata/swapi_introspection_response.json")
+	introspectedBytes, err := os.ReadFile("./testdata/swapi_introspection_response.json")
 	require.NoError(b, err)
 	b.ResetTimer()
 
diff --git a/v2/pkg/introspection/generator_test.go b/v2/pkg/introspection/generator_test.go
index 9a52f115a..40d951c82 100644
--- a/v2/pkg/introspection/generator_test.go
+++ b/v2/pkg/introspection/generator_test.go
@@ -2,7 +2,7 @@ package introspection
 
 import (
 	"encoding/json"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/jensneuse/diffview"
@@ -14,7 +14,7 @@ import (
 func TestGenerator_Generate(t *testing.T) {
 	t.Skip("FIXME")
 
-	starwarsSchemaBytes, err := ioutil.ReadFile("./testdata/starwars.schema.graphql")
+	starwarsSchemaBytes, err := os.ReadFile("./testdata/starwars.schema.graphql")
 	if err != nil {
 		panic(err)
 	}
@@ -38,7 +38,7 @@ func TestGenerator_Generate(t *testing.T) {
 
 	goldie.Assert(t, "starwars_introspected", outputPretty)
 	if t.Failed() {
-		fixture, err := ioutil.ReadFile("./fixtures/starwars_introspected.golden")
+		fixture, err := os.ReadFile("./fixtures/starwars_introspected.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -50,7 +50,7 @@ func TestGenerator_Generate(t *testing.T) {
 func TestGenerator_Generate_Interfaces_Implementing_Interfaces(t *testing.T) {
 	t.Skip("FIXME")
 
-	interfacesSchemaBytes, err := ioutil.ReadFile("./testdata/interfaces_implementing_interfaces.graphql")
+	interfacesSchemaBytes, err := os.ReadFile("./testdata/interfaces_implementing_interfaces.graphql")
 	if err != nil {
 		panic(err)
 	}
@@ -74,7 +74,7 @@ func TestGenerator_Generate_Interfaces_Implementing_Interfaces(t *testing.T) {
 
 	goldie.Assert(t, "interfaces_implementing_interfaces", outputPretty)
 	if t.Failed() {
-		fixture, err := ioutil.ReadFile("./fixtures/interfaces_implementing_interfaces.golden")
+		fixture, err := os.ReadFile("./fixtures/interfaces_implementing_interfaces.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
diff --git a/v2/pkg/introspection/introspection_test.go b/v2/pkg/introspection/introspection_test.go
index 3f87e63d6..5754cb6f7 100644
--- a/v2/pkg/introspection/introspection_test.go
+++ b/v2/pkg/introspection/introspection_test.go
@@ -2,13 +2,12 @@ package introspection
 
 import (
 	"encoding/json"
-	"io/ioutil"
 	"os"
 	"testing"
 )
 
 func TestIntrospectionSerialization(t *testing.T) {
-	inputData, err := ioutil.ReadFile("./testdata/swapi_introspection_response.json")
+	inputData, err := os.ReadFile("./testdata/swapi_introspection_response.json")
 	if err != nil {
 		panic(err)
 	}
@@ -25,7 +24,7 @@ func TestIntrospectionSerialization(t *testing.T) {
 		panic(err)
 	}
 
-	err = ioutil.WriteFile("./testdata/out_swapi_introspection_response.json", outputData, os.ModePerm)
+	err = os.WriteFile("./testdata/out_swapi_introspection_response.json", outputData, os.ModePerm)
 	if err != nil {
 		panic(err)
 	}
diff --git a/v2/pkg/lexer/lexer_test.go b/v2/pkg/lexer/lexer_test.go
index 388e07e0a..427db2b8d 100644
--- a/v2/pkg/lexer/lexer_test.go
+++ b/v2/pkg/lexer/lexer_test.go
@@ -3,7 +3,7 @@ package lexer
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/jensneuse/diffview"
@@ -646,7 +646,7 @@ func TestLexerRegressions(t *testing.T) {
 	goldie.Assert(t, "introspection_lexed", data)
 	if t.Failed() {
 
-		fixture, err := ioutil.ReadFile("./fixtures/introspection_lexed.golden")
+		fixture, err := os.ReadFile("./fixtures/introspection_lexed.golden")
 		if err != nil {
 			t.Fatal(err)
 		}
diff --git a/v2/pkg/playground/playground_test.go b/v2/pkg/playground/playground_test.go
index ddb5bc99e..82e436b9d 100644
--- a/v2/pkg/playground/playground_test.go
+++ b/v2/pkg/playground/playground_test.go
@@ -2,7 +2,7 @@ package playground
 
 import (
 	"bytes"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/davecgh/go-spew/spew"
@@ -56,7 +56,7 @@ func TestConfigureHandlers(t *testing.T) {
 
 		goldie.Assert(t, "handlers", out.Bytes())
 		if t.Failed() {
-			fixture, err := ioutil.ReadFile("./fixtures/handlers.golden")
+			fixture, err := os.ReadFile("./fixtures/handlers.golden")
 			if err != nil {
 				t.Fatal(err)
 			}
diff --git a/v2/pkg/starwars/starwars.go b/v2/pkg/starwars/starwars.go
index 7148ede2a..c38c7b3c3 100644
--- a/v2/pkg/starwars/starwars.go
+++ b/v2/pkg/starwars/starwars.go
@@ -2,7 +2,7 @@ package starwars
 
 import (
 	"encoding/json"
-	"io/ioutil"
+	"os"
 	"path"
 
 	"github.com/stretchr/testify/require"
@@ -57,13 +57,13 @@ func SetRelativePathToStarWarsPackage(path string) {
 }
 
 func Schema(t TestingTB) []byte {
-	schema, err := ioutil.ReadFile(path.Join(testdataPath, "testdata/star_wars.graphql"))
+	schema, err := os.ReadFile(path.Join(testdataPath, "testdata/star_wars.graphql"))
 	require.NoError(t, err)
 	return schema
 }
 
 func LoadQuery(t TestingTB, fileName string, variables QueryVariables) []byte {
-	query, err := ioutil.ReadFile(path.Join(testdataPath, fileName))
+	query, err := os.ReadFile(path.Join(testdataPath, fileName))
 	require.NoError(t, err)
 
 	return RequestBody(t, string(query), variables)
diff --git a/v2/pkg/testing/federationtesting/gateway/datasource_poller.go b/v2/pkg/testing/federationtesting/gateway/datasource_poller.go
index 52221dab5..74469907b 100644
--- a/v2/pkg/testing/federationtesting/gateway/datasource_poller.go
+++ b/v2/pkg/testing/federationtesting/gateway/datasource_poller.go
@@ -5,7 +5,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"strings"
@@ -196,7 +196,7 @@ func (d *DatasourcePollerPoller) fetchServiceSDL(ctx context.Context, serviceURL
 		Errors GQLErr `json:"errors,omitempty"`
 	}
 
-	bs, err := ioutil.ReadAll(resp.Body)
+	bs, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return "", fmt.Errorf("read bytes: %v", err)
 	}
diff --git a/v2/pkg/testing/federationtesting/graphql_client_test.go b/v2/pkg/testing/federationtesting/graphql_client_test.go
index 8369c41a2..0da21b49a 100644
--- a/v2/pkg/testing/federationtesting/graphql_client_test.go
+++ b/v2/pkg/testing/federationtesting/graphql_client_test.go
@@ -4,9 +4,10 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
+	"os"
 	"testing"
 
 	"github.com/gobwas/ws"
@@ -41,7 +42,7 @@ func requestBody(t *testing.T, query string, variables queryVariables) []byte {
 }
 
 func loadQuery(t *testing.T, filePath string, variables queryVariables) []byte {
-	query, err := ioutil.ReadFile(filePath)
+	query, err := os.ReadFile(filePath)
 	require.NoError(t, err)
 
 	return requestBody(t, string(query), variables)
@@ -64,7 +65,7 @@ func (g *GraphqlClient) Query(ctx context.Context, addr, queryFilePath string, v
 	req = req.WithContext(ctx)
 	resp, err := g.httpClient.Do(req)
 	require.NoError(t, err)
-	responseBodyBytes, err := ioutil.ReadAll(resp.Body)
+	responseBodyBytes, err := io.ReadAll(resp.Body)
 	require.NoError(t, err)
 	assert.Equal(t, http.StatusOK, resp.StatusCode)
 	assert.Contains(t, resp.Header.Get("Content-Type"), "application/json")
diff --git a/v2/pkg/testing/federationtesting/util.go b/v2/pkg/testing/federationtesting/util.go
index 2ac34750b..e565a5a95 100644
--- a/v2/pkg/testing/federationtesting/util.go
+++ b/v2/pkg/testing/federationtesting/util.go
@@ -1,7 +1,6 @@
 package federationtesting
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -45,5 +44,5 @@ func LoadTestingSubgraphSDL(upstream Upstream) ([]byte, error) {
 	}
 
 	absolutePath := filepath.Join(strings.Split(wd, "pkg")[0], federationTestingDirectoryRelativePath, string(upstream), "graph", "schema.graphqls")
-	return ioutil.ReadFile(absolutePath)
+	return os.ReadFile(absolutePath)
 }
diff --git a/v2/pkg/testing/subscriptiontesting/util.go b/v2/pkg/testing/subscriptiontesting/util.go
index 889eab196..a648ee0d0 100644
--- a/v2/pkg/testing/subscriptiontesting/util.go
+++ b/v2/pkg/testing/subscriptiontesting/util.go
@@ -2,7 +2,6 @@ package subscriptiontesting
 
 import (
 	"encoding/json"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -63,7 +62,7 @@ func LoadSchemaFromExamplesDirectoryWithinPkg() ([]byte, error) {
 	}
 
 	absolutePath := filepath.Join(strings.Split(wd, "pkg")[0], chatExampleDirectoryRelativePath, "schema.graphql")
-	return ioutil.ReadFile(absolutePath)
+	return os.ReadFile(absolutePath)
 }
 
 func GraphQLRequestForOperation(operation string) ([]byte, error) {