diff --git a/cmp/internal/diff/diff_test.go b/cmp/internal/diff/diff_test.go
index eacf072..f351c18 100644
--- a/cmp/internal/diff/diff_test.go
+++ b/cmp/internal/diff/diff_test.go
@@ -243,8 +243,8 @@ func TestDifference(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run("", func(t *testing.T) {
-			x := strings.Replace(tt.x, " ", "", -1)
-			y := strings.Replace(tt.y, " ", "", -1)
+			x := strings.ReplaceAll(tt.x, " ", "")
+			y := strings.ReplaceAll(tt.y, " ", "")
 			es := testStrings(t, x, y)
 			var want string
 			got := es.String()
diff --git a/cmp/internal/value/name_test.go b/cmp/internal/value/name_test.go
index c93990a..1f20bc3 100644
--- a/cmp/internal/value/name_test.go
+++ b/cmp/internal/value/name_test.go
@@ -129,14 +129,14 @@ func TestTypeString(t *testing.T) {
 	for _, tt := range tests {
 		typ := reflect.TypeOf(tt.in)
 		wantShort := tt.want
-		wantShort = strings.Replace(wantShort, "$PackagePath", "value", -1)
-		wantShort = strings.Replace(wantShort, "$FieldPrefix.", "", -1)
+		wantShort = strings.ReplaceAll(wantShort, "$PackagePath", "value")
+		wantShort = strings.ReplaceAll(wantShort, "$FieldPrefix.", "")
 		if gotShort := TypeString(typ, false); gotShort != wantShort {
 			t.Errorf("TypeString(%v, false) mismatch:\ngot:  %v\nwant: %v", typ, gotShort, wantShort)
 		}
 		wantQualified := tt.want
-		wantQualified = strings.Replace(wantQualified, "$PackagePath", `"`+pkgPath+`"`, -1)
-		wantQualified = strings.Replace(wantQualified, "$FieldPrefix", `"`+pkgPath+`"`, -1)
+		wantQualified = strings.ReplaceAll(wantQualified, "$PackagePath", `"`+pkgPath+`"`)
+		wantQualified = strings.ReplaceAll(wantQualified, "$FieldPrefix", `"`+pkgPath+`"`)
 		if gotQualified := TypeString(typ, true); gotQualified != wantQualified {
 			t.Errorf("TypeString(%v, true) mismatch:\ngot:  %v\nwant: %v", typ, gotQualified, wantQualified)
 		}