bencode/both_test.go          | 4 ++--
 cmd/torrent-pick/main.go      | 3 +--
 internal/testutil/greeting.go | 3 +--
 internal/testutil/spec.go     | 3 +--
 issue211_test.go              | 3 +--
 metainfo/metainfo_test.go     | 3 +--
 mse/mse.go                    | 5 ++---
 mse/mse_test.go               | 3 +--
 storage/piece-resource.go     | 3 +--
 test/transfer_test.go         | 3 +--
 tracker/udp_test.go           | 4 ++--

diff --git a/bencode/both_test.go b/bencode/both_test.go
index b0bb074d38af6b17e236e06a19a5105528a4f499..fdcb90d9f8e44184039c3c6aa825b79d1a6f6667 100644
--- a/bencode/both_test.go
+++ b/bencode/both_test.go
@@ -2,7 +2,7 @@ package bencode
 
 import (
 	"bytes"
-	"io/ioutil"
+	"os"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -10,7 +10,7 @@ 	"github.com/stretchr/testify/require"
 )
 
 func loadFile(name string, t *testing.T) []byte {
-	data, err := ioutil.ReadFile(name)
+	data, err := os.ReadFile(name)
 	require.NoError(t, err)
 	return data
 }
diff --git a/cmd/torrent-pick/main.go b/cmd/torrent-pick/main.go
index 8dd5a773c24485ef1ff3f48e27e6c8c505ab54e1..73a597f3622024604c26e22a9cfeba7d079a66bd 100644
--- a/cmd/torrent-pick/main.go
+++ b/cmd/torrent-pick/main.go
@@ -5,7 +5,6 @@ import (
 	"bufio"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"net"
 	"net/http"
@@ -107,7 +106,7 @@ 		fmt.Fprintln(os.Stderr, "no torrents specified")
 		return
 	}
 
-	tmpdir, err := ioutil.TempDir("", "torrent-pick-")
+	tmpdir, err := os.MkdirTemp("", "torrent-pick-")
 	if err != nil {
 		log.Fatal(err)
 	}
diff --git a/internal/testutil/greeting.go b/internal/testutil/greeting.go
index 954ad9130d55fa644f02c5e946dfc5a249b48d5e..6544483c8b312690764518f4f8be1bfeb241d09f 100644
--- a/internal/testutil/greeting.go
+++ b/internal/testutil/greeting.go
@@ -6,7 +6,6 @@
 package testutil
 
 import (
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -41,7 +40,7 @@ // Gives a temporary directory containing the completed "greeting" torrent,
 // and a corresponding metainfo describing it. The temporary directory can be
 // cleaned away with os.RemoveAll.
 func GreetingTestTorrent() (tempDir string, metaInfo *metainfo.MetaInfo) {
-	tempDir, err := ioutil.TempDir(os.TempDir(), "")
+	tempDir, err := os.MkdirTemp(os.TempDir(), "")
 	if err != nil {
 		panic(err)
 	}
diff --git a/internal/testutil/spec.go b/internal/testutil/spec.go
index 42d91ba3cfa34b96609145ff16f65ea2eca36f29..63e4a74c633f646bdb1efa7c1607684cf0b807d9 100644
--- a/internal/testutil/spec.go
+++ b/internal/testutil/spec.go
@@ -2,7 +2,6 @@ package testutil
 
 import (
 	"io"
-	"io/ioutil"
 	"strings"
 
 	"github.com/anacrolix/missinggo/expect"
@@ -53,7 +52,7 @@ 			})
 		}
 	}
 	err := info.GeneratePieces(func(fi metainfo.FileInfo) (io.ReadCloser, error) {
-		return ioutil.NopCloser(strings.NewReader(t.GetFile(strings.Join(fi.Path, "/")).Data)), nil
+		return io.NopCloser(strings.NewReader(t.GetFile(strings.Join(fi.Path, "/")).Data)), nil
 	})
 	expect.Nil(err)
 	return info
diff --git a/issue211_test.go b/issue211_test.go
index 7794f8a50137974993485f57d1a14f30f3d5a913..a76be07a8a2da0a6c6682e28038eb610a9d8f140 100644
--- a/issue211_test.go
+++ b/issue211_test.go
@@ -5,7 +5,6 @@ package torrent
 
 import (
 	"io"
-	"io/ioutil"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -38,5 +37,5 @@ 	assert.True(t, new)
 
 	r := tt.NewReader()
 	go tt.Drop()
-	io.Copy(ioutil.Discard, r)
+	io.Copy(io.Discard, r)
 }
diff --git a/metainfo/metainfo_test.go b/metainfo/metainfo_test.go
index d1a6c356c42fa83d304f754e22db963edfdfdea7..335631f9850c7ba6b135612c38ed89958e48bfa9 100644
--- a/metainfo/metainfo_test.go
+++ b/metainfo/metainfo_test.go
@@ -2,7 +2,6 @@ package metainfo
 
 import (
 	"io"
-	"io/ioutil"
 	"os"
 	"path"
 	"path/filepath"
@@ -68,7 +67,7 @@ 			Files:       _case.Files,
 			PieceLength: _case.PieceLength,
 		}
 		err := info.GeneratePieces(func(fi FileInfo) (io.ReadCloser, error) {
-			return ioutil.NopCloser(missinggo.ZeroReader), nil
+			return io.NopCloser(missinggo.ZeroReader), nil
 		})
 		assert.NoError(t, err)
 		assert.EqualValues(t, _case.NumPieces, info.NumPieces())
diff --git a/mse/mse.go b/mse/mse.go
index a5477b8f172706af718565cc59a2928651e0b9d5..c3a9f3d3ae840c77eed1c37a881111194ae71c9f 100644
--- a/mse/mse.go
+++ b/mse/mse.go
@@ -12,7 +12,6 @@ 	"errors"
 	"expvar"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"math"
 	"math/big"
 	"strconv"
@@ -409,7 +408,7 @@ 	err = unmarshal(r, &method, &padLen)
 	if err != nil {
 		return
 	}
-	_, err = io.CopyN(ioutil.Discard, r, int64(padLen))
+	_, err = io.CopyN(io.Discard, r, int64(padLen))
 	if err != nil {
 		return
 	}
@@ -474,7 +473,7 @@ 		return
 	}
 	cryptoProvidesCount.Add(strconv.FormatUint(uint64(provides), 16), 1)
 	chosen = h.chooseMethod(provides)
-	_, err = io.CopyN(ioutil.Discard, r, int64(padLen))
+	_, err = io.CopyN(io.Discard, r, int64(padLen))
 	if err != nil {
 		return
 	}
diff --git a/mse/mse_test.go b/mse/mse_test.go
index a38e9cc109aec619fb38ce7199312dd5979b5d60..f7f7fe7ab9c7f2090f2a30467cc5635414dbdc8d 100644
--- a/mse/mse_test.go
+++ b/mse/mse_test.go
@@ -5,7 +5,6 @@ 	"bytes"
 	"crypto/rand"
 	"crypto/rc4"
 	"io"
-	"io/ioutil"
 	"net"
 	"sync"
 	"testing"
@@ -131,7 +130,7 @@ }
 
 func TestReceiveRandomData(t *testing.T) {
 	tr := trackReader{rand.Reader, 0}
-	_, _, err := ReceiveHandshake(readWriter{&tr, ioutil.Discard}, nil, DefaultCryptoSelector)
+	_, _, err := ReceiveHandshake(readWriter{&tr, io.Discard}, nil, DefaultCryptoSelector)
 	// No skey matches
 	require.Error(t, err)
 	// Establishing S, and then reading the maximum padding for giving up on
diff --git a/storage/piece-resource.go b/storage/piece-resource.go
index ec3848df2111186259ce1cb76c9f6749aa8623f9..5327f31d1b10e5ca08b1ffeb03e4e76af8ca39c4 100644
--- a/storage/piece-resource.go
+++ b/storage/piece-resource.go
@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"path"
 	"sort"
 	"strconv"
@@ -141,7 +140,7 @@ 	r, err := func() (io.ReadCloser, error) {
 		if ccr, ok := s.rp.(ConsecutiveChunkReader); ok {
 			return ccr.ReadConsecutiveChunks(s.incompleteDirPath() + "/")
 		}
-		return ioutil.NopCloser(io.NewSectionReader(incompleteChunks, 0, s.mp.Length())), nil
+		return io.NopCloser(io.NewSectionReader(incompleteChunks, 0, s.mp.Length())), nil
 	}()
 	if err != nil {
 		return fmt.Errorf("getting incomplete chunks reader: %w", err)
diff --git a/test/transfer_test.go b/test/transfer_test.go
index 683d589b897059c1b76b24491c66bedecdcc7773..501872fd8fb642971aedd1134ce91f0df16b4574 100644
--- a/test/transfer_test.go
+++ b/test/transfer_test.go
@@ -2,7 +2,6 @@ package test
 
 import (
 	"io"
-	"io/ioutil"
 	"os"
 	"sync"
 	"testing"
@@ -46,7 +45,7 @@ 				fc.AsResourceProvider(),
 				storage.ResourcePiecesOpts{
 					Capacity: sharedCapacity,
 				}),
-			ioutil.NopCloser(nil),
+			io.NopCloser(nil),
 		}
 	}
 }
diff --git a/tracker/udp_test.go b/tracker/udp_test.go
index cf18e0de9f2dc20fc07f7f13fd9a6b99fc48fe03..232aeb1973a51f0229b6591894473ea4a61c94c8 100644
--- a/tracker/udp_test.go
+++ b/tracker/udp_test.go
@@ -6,7 +6,7 @@ 	"context"
 	"crypto/rand"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/url"
 	"sync"
@@ -179,7 +179,7 @@ 	n, _, _ := conn.ReadFrom(b[:])
 	r = bytes.NewReader(b[:n])
 	udp.Read(r, &h)
 	udp.Read(r, &AnnounceRequest{})
-	all, _ := ioutil.ReadAll(r)
+	all, _ := io.ReadAll(r)
 	if string(all) != "\x02\x09/announce" {
 		t.FailNow()
 	}