diff --git a/rules/manager_test.go b/rules/manager_test.go
index e7f9c0084..26aa3b2c8 100644
--- a/rules/manager_test.go
+++ b/rules/manager_test.go
@@ -17,7 +17,6 @@ import (
 	"context"
 	"fmt"
 	"io/fs"
-	"io/ioutil"
 	"math"
 	"os"
 	"path"
@@ -834,7 +833,7 @@ func TestUpdateSetsSourceTenants(t *testing.T) {
 	rgs, errs := rulefmt.ParseFile("fixtures/rules_with_source_tenants.yaml")
 	require.Empty(t, errs, "file parsing failures")
 
-	tmpFile, err := ioutil.TempFile("", "rules.test.*.yaml")
+	tmpFile, err := os.CreateTemp("", "rules.test.*.yaml")
 	require.NoError(t, err)
 	defer os.Remove(tmpFile.Name())
 	defer tmpFile.Close()
@@ -882,7 +881,7 @@ func TestGroupEvaluationContextFuncIsCalledWhenSupplied(t *testing.T) {
 	rgs, errs := rulefmt.ParseFile("fixtures/rules_with_source_tenants.yaml")
 	require.Empty(t, errs, "file parsing failures")
 
-	tmpFile, err := ioutil.TempFile("", "rules.test.*.yaml")
+	tmpFile, err := os.CreateTemp("", "rules.test.*.yaml")
 	require.NoError(t, err)
 	defer os.Remove(tmpFile.Name())
 	defer tmpFile.Close()
@@ -1540,7 +1539,7 @@ groups:
 
 	dir := t.TempDir()
 	fname := path.Join(dir, "rules.yaml")
-	err := ioutil.WriteFile(fname, []byte(config), fs.ModePerm)
+	err := os.WriteFile(fname, []byte(config), fs.ModePerm)
 	require.NoError(t, err)
 
 	m := NewManager(&ManagerOptions{
diff --git a/tsdb/chunks/old_head_chunks_test.go b/tsdb/chunks/old_head_chunks_test.go
index d81ef3df2..834e427e1 100644
--- a/tsdb/chunks/old_head_chunks_test.go
+++ b/tsdb/chunks/old_head_chunks_test.go
@@ -16,7 +16,6 @@ package chunks
 import (
 	"encoding/binary"
 	"errors"
-	"io/ioutil"
 	"math/rand"
 	"os"
 	"strconv"
@@ -108,7 +107,7 @@ func TestOldChunkDiskMapper_WriteChunk_Chunk_IterateChunks(t *testing.T) {
 	require.Equal(t, 3, len(hrw.mmappedChunkFiles), "expected 3 mmapped files, got %d", len(hrw.mmappedChunkFiles))
 	require.Equal(t, len(hrw.mmappedChunkFiles), len(hrw.closers))
 
-	actualBytes, err := ioutil.ReadFile(firstFileName)
+	actualBytes, err := os.ReadFile(firstFileName)
 	require.NoError(t, err)
 
 	// Check header of the segment file.
@@ -224,7 +223,7 @@ func TestOldChunkDiskMapper_Truncate(t *testing.T) {
 	verifyFiles := func(remainingFiles []int) {
 		t.Helper()
 
-		files, err := ioutil.ReadDir(hrw.dir.Name())
+		files, err := os.ReadDir(hrw.dir.Name())
 		require.NoError(t, err)
 		require.Equal(t, len(remainingFiles), len(files), "files on disk")
 		require.Equal(t, len(remainingFiles), len(hrw.mmappedChunkFiles), "hrw.mmappedChunkFiles")
@@ -322,7 +321,7 @@ func TestOldChunkDiskMapper_Truncate_PreservesFileSequence(t *testing.T) {
 	verifyFiles := func(remainingFiles []int) {
 		t.Helper()
 
-		files, err := ioutil.ReadDir(hrw.dir.Name())
+		files, err := os.ReadDir(hrw.dir.Name())
 		require.NoError(t, err)
 		require.Equal(t, len(remainingFiles), len(files), "files on disk")
 		require.Equal(t, len(remainingFiles), len(hrw.mmappedChunkFiles), "hrw.mmappedChunkFiles")
@@ -448,7 +447,7 @@ func TestOldChunkDiskMapper_ReadRepairOnEmptyLastFile(t *testing.T) {
 	}
 
 	// Removed even from disk.
-	files, err := ioutil.ReadDir(dir)
+	files, err := os.ReadDir(dir)
 	require.NoError(t, err)
 	require.Equal(t, 3, len(files))
 	for _, fi := range files {
@@ -459,11 +458,7 @@ func TestOldChunkDiskMapper_ReadRepairOnEmptyLastFile(t *testing.T) {
 }
 
 func testOldChunkDiskMapper(t *testing.T) *OldChunkDiskMapper {
-	tmpdir, err := ioutil.TempDir("", "data")
-	require.NoError(t, err)
-	t.Cleanup(func() {
-		require.NoError(t, os.RemoveAll(tmpdir))
-	})
+	tmpdir := t.TempDir()
 
 	hrw, err := NewOldChunkDiskMapper(tmpdir, chunkenc.NewPool(), DefaultWriteBufferSize)
 	require.NoError(t, err)
diff --git a/tsdb/compact_test.go b/tsdb/compact_test.go
index 3a063c4bd..e02438d3e 100644
--- a/tsdb/compact_test.go
+++ b/tsdb/compact_test.go
@@ -17,7 +17,6 @@ import (
 	"context"
 	"crypto/rand"
 	"fmt"
-	"io/ioutil"
 	"math"
 	"os"
 	"path"
@@ -503,7 +502,7 @@ func TestCompaction_CompactWithSplitting(t *testing.T) {
 	shardCounts := []uint64{1, 13}
 
 	for _, series := range seriesCounts {
-		dir, err := ioutil.TempDir("", "compact")
+		dir, err := os.MkdirTemp("", "compact")
 		require.NoError(t, err)
 		defer func() {
 			require.NoError(t, os.RemoveAll(dir))
@@ -623,7 +622,7 @@ func TestCompaction_CompactWithSplitting(t *testing.T) {
 }
 
 func TestCompaction_CompactEmptyBlocks(t *testing.T) {
-	dir, err := ioutil.TempDir("", "compact")
+	dir, err := os.MkdirTemp("", "compact")
 	require.NoError(t, err)
 	defer func() {
 		require.NoError(t, os.RemoveAll(dir))
diff --git a/tsdb/index/index_test.go b/tsdb/index/index_test.go
index 629fce894..44a0a1614 100644
--- a/tsdb/index/index_test.go
+++ b/tsdb/index/index_test.go
@@ -608,7 +608,7 @@ func BenchmarkReader_ShardedPostings(b *testing.B) {
 		numShards = 16
 	)
 
-	dir, err := ioutil.TempDir("", "benchmark_reader_sharded_postings")
+	dir, err := os.MkdirTemp("", "benchmark_reader_sharded_postings")
 	require.NoError(b, err)
 	defer func() {
 		require.NoError(b, os.RemoveAll(dir))