diff --git a/openpgp/v2/write_test.go b/openpgp/v2/write_test.go
index 5a04f19e..29fc7b04 100644
--- a/openpgp/v2/write_test.go
+++ b/openpgp/v2/write_test.go
@@ -1036,7 +1036,10 @@ func TestEncryptWithAEAD(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	dec, err := ioutil.ReadAll(m.decrypted)
+	dec, err := io.ReadAll(m.decrypted)
+	if err != nil {
+		t.Fatal(err)
+	}
 
 	if !bytes.Equal(dec, []byte(message)) {
 		t.Error("decrypted does not match original")
diff --git a/openpgp/write_test.go b/openpgp/write_test.go
index 39bb2525..d9953463 100644
--- a/openpgp/write_test.go
+++ b/openpgp/write_test.go
@@ -301,7 +301,10 @@ func TestEncryptWithAEAD(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	dec, err := ioutil.ReadAll(m.decrypted)
+	dec, err := io.ReadAll(m.decrypted)
+	if err != nil {
+		t.Fatal(err)
+	}
 
 	if !bytes.Equal(dec, []byte(message)) {
 		t.Error("decrypted does not match original")