diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8b1e80a..cc5a62b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go: [1.16.x, 1.17.x]
+        go: [1.16.x, 1.17.x, 1.18.x]
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/internal/format/format_test.go b/internal/format/format_test.go
index a7e227c..450be55 100644
--- a/internal/format/format_test.go
+++ b/internal/format/format_test.go
@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build go1.18
+// +build go1.18
+
 package format_test
 
 import (
diff --git a/testkit_test.go b/testkit_test.go
index ea9d69d..166e15e 100644
--- a/testkit_test.go
+++ b/testkit_test.go
@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build go1.18
+// +build go1.18
+
 package age_test
 
 import (
diff --git a/tests/header_crlf.go b/tests/header_crlf.go
index c28c0f0..9071490 100644
--- a/tests/header_crlf.go
+++ b/tests/header_crlf.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/hmac_bad.go b/tests/hmac_bad.go
index b6a7eba..801f45d 100644
--- a/tests/hmac_bad.go
+++ b/tests/hmac_bad.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/hmac_extra_space.go b/tests/hmac_extra_space.go
index 6d88871..300a76f 100644
--- a/tests/hmac_extra_space.go
+++ b/tests/hmac_extra_space.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/hmac_garbage.go b/tests/hmac_garbage.go
index 04e4df5..0756f7d 100644
--- a/tests/hmac_garbage.go
+++ b/tests/hmac_garbage.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/hmac_missing.go b/tests/hmac_missing.go
index b094de8..9b1b042 100644
--- a/tests/hmac_missing.go
+++ b/tests/hmac_missing.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/hmac_no_space.go b/tests/hmac_no_space.go
index d15c9df..a249368 100644
--- a/tests/hmac_no_space.go
+++ b/tests/hmac_no_space.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/hmac_not_canonical.go b/tests/hmac_not_canonical.go
index 0f6fc06..81968c7 100644
--- a/tests/hmac_not_canonical.go
+++ b/tests/hmac_not_canonical.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/hmac_trailing_space.go b/tests/hmac_trailing_space.go
index 02395d7..93eecc6 100644
--- a/tests/hmac_trailing_space.go
+++ b/tests/hmac_trailing_space.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/hmac_truncated.go b/tests/hmac_truncated.go
index 9f3a009..4336bea 100644
--- a/tests/hmac_truncated.go
+++ b/tests/hmac_truncated.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt.go b/tests/scrypt.go
index 53f540f..8bdb40e 100644
--- a/tests/scrypt.go
+++ b/tests/scrypt.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_and_x25519.go b/tests/scrypt_and_x25519.go
index 649c07b..efdc9fd 100644
--- a/tests/scrypt_and_x25519.go
+++ b/tests/scrypt_and_x25519.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_bad_tag.go b/tests/scrypt_bad_tag.go
index 0675075..ee687ae 100644
--- a/tests/scrypt_bad_tag.go
+++ b/tests/scrypt_bad_tag.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_double.go b/tests/scrypt_double.go
index 2e947c3..8118295 100644
--- a/tests/scrypt_double.go
+++ b/tests/scrypt_double.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_extra_argument.go b/tests/scrypt_extra_argument.go
index baa3d7a..7439b24 100644
--- a/tests/scrypt_extra_argument.go
+++ b/tests/scrypt_extra_argument.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_long_file_key.go b/tests/scrypt_long_file_key.go
index 1ba3260..d9da560 100644
--- a/tests/scrypt_long_file_key.go
+++ b/tests/scrypt_long_file_key.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_no_match.go b/tests/scrypt_no_match.go
index ae4acae..32754eb 100644
--- a/tests/scrypt_no_match.go
+++ b/tests/scrypt_no_match.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_not_canonical_body.go b/tests/scrypt_not_canonical_body.go
index d0a0304..35f83fe 100644
--- a/tests/scrypt_not_canonical_body.go
+++ b/tests/scrypt_not_canonical_body.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_not_canonical_salt.go b/tests/scrypt_not_canonical_salt.go
index 38f27d2..383ad0b 100644
--- a/tests/scrypt_not_canonical_salt.go
+++ b/tests/scrypt_not_canonical_salt.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_salt_long.go b/tests/scrypt_salt_long.go
index 578cb8f..f2522c8 100644
--- a/tests/scrypt_salt_long.go
+++ b/tests/scrypt_salt_long.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_salt_missing.go b/tests/scrypt_salt_missing.go
index a07715d..aa227a8 100644
--- a/tests/scrypt_salt_missing.go
+++ b/tests/scrypt_salt_missing.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_salt_short.go b/tests/scrypt_salt_short.go
index e277af8..30ae21f 100644
--- a/tests/scrypt_salt_short.go
+++ b/tests/scrypt_salt_short.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_uppercase.go b/tests/scrypt_uppercase.go
index 836a4d1..ec3e5ef 100644
--- a/tests/scrypt_uppercase.go
+++ b/tests/scrypt_uppercase.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_work_factor_23.go b/tests/scrypt_work_factor_23.go
index 5666f93..5e6a786 100644
--- a/tests/scrypt_work_factor_23.go
+++ b/tests/scrypt_work_factor_23.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_work_factor_hex.go b/tests/scrypt_work_factor_hex.go
index fc43e4b..59c5b03 100644
--- a/tests/scrypt_work_factor_hex.go
+++ b/tests/scrypt_work_factor_hex.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_work_factor_leading_garbage.go b/tests/scrypt_work_factor_leading_garbage.go
index 0b1a9a2..50b2e21 100644
--- a/tests/scrypt_work_factor_leading_garbage.go
+++ b/tests/scrypt_work_factor_leading_garbage.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_work_factor_leading_plus.go b/tests/scrypt_work_factor_leading_plus.go
index 34dc4af..9b84967 100644
--- a/tests/scrypt_work_factor_leading_plus.go
+++ b/tests/scrypt_work_factor_leading_plus.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_work_factor_leading_zero_decimal.go b/tests/scrypt_work_factor_leading_zero_decimal.go
index 09c2dce..62f1e2e 100644
--- a/tests/scrypt_work_factor_leading_zero_decimal.go
+++ b/tests/scrypt_work_factor_leading_zero_decimal.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_work_factor_leading_zero_octal.go b/tests/scrypt_work_factor_leading_zero_octal.go
index 24be6af..2485643 100644
--- a/tests/scrypt_work_factor_leading_zero_octal.go
+++ b/tests/scrypt_work_factor_leading_zero_octal.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_work_factor_missing.go b/tests/scrypt_work_factor_missing.go
index 18e6d06..fc6f580 100644
--- a/tests/scrypt_work_factor_missing.go
+++ b/tests/scrypt_work_factor_missing.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_work_factor_negative.go b/tests/scrypt_work_factor_negative.go
index ed264b0..5ff675e 100644
--- a/tests/scrypt_work_factor_negative.go
+++ b/tests/scrypt_work_factor_negative.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_work_factor_overflow.go b/tests/scrypt_work_factor_overflow.go
index 3520057..deb9cbc 100644
--- a/tests/scrypt_work_factor_overflow.go
+++ b/tests/scrypt_work_factor_overflow.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_work_factor_trailing_garbage.go b/tests/scrypt_work_factor_trailing_garbage.go
index 0b1a9a2..50b2e21 100644
--- a/tests/scrypt_work_factor_trailing_garbage.go
+++ b/tests/scrypt_work_factor_trailing_garbage.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_work_factor_wrong.go b/tests/scrypt_work_factor_wrong.go
index a004999..bb6101f 100644
--- a/tests/scrypt_work_factor_wrong.go
+++ b/tests/scrypt_work_factor_wrong.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/scrypt_work_factor_zero.go b/tests/scrypt_work_factor_zero.go
index bc193f8..541f9d0 100644
--- a/tests/scrypt_work_factor_zero.go
+++ b/tests/scrypt_work_factor_zero.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_bad_start.go b/tests/stanza_bad_start.go
index 3e473c2..53542e7 100644
--- a/tests/stanza_bad_start.go
+++ b/tests/stanza_bad_start.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_base64_padding.go b/tests/stanza_base64_padding.go
index 0c81221..76fb221 100644
--- a/tests/stanza_base64_padding.go
+++ b/tests/stanza_base64_padding.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_empty_argument.go b/tests/stanza_empty_argument.go
index 60b707f..71c2c25 100644
--- a/tests/stanza_empty_argument.go
+++ b/tests/stanza_empty_argument.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_empty_body.go b/tests/stanza_empty_body.go
index d5eb52d..5013e94 100644
--- a/tests/stanza_empty_body.go
+++ b/tests/stanza_empty_body.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_empty_last_line.go b/tests/stanza_empty_last_line.go
index 8ed8f78..f1e3777 100644
--- a/tests/stanza_empty_last_line.go
+++ b/tests/stanza_empty_last_line.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_invalid_character.go b/tests/stanza_invalid_character.go
index bd9c7e3..143b488 100644
--- a/tests/stanza_invalid_character.go
+++ b/tests/stanza_invalid_character.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_long_line.go b/tests/stanza_long_line.go
index 5eb7d5c..9debef1 100644
--- a/tests/stanza_long_line.go
+++ b/tests/stanza_long_line.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_missing_body.go b/tests/stanza_missing_body.go
index 649b5b6..fc401ad 100644
--- a/tests/stanza_missing_body.go
+++ b/tests/stanza_missing_body.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_missing_final_line.go b/tests/stanza_missing_final_line.go
index 5b5b6b5..5722283 100644
--- a/tests/stanza_missing_final_line.go
+++ b/tests/stanza_missing_final_line.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_multiple_short_lines.go b/tests/stanza_multiple_short_lines.go
index 045f78f..427873f 100644
--- a/tests/stanza_multiple_short_lines.go
+++ b/tests/stanza_multiple_short_lines.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_no_arguments.go b/tests/stanza_no_arguments.go
index ecba530..8963802 100644
--- a/tests/stanza_no_arguments.go
+++ b/tests/stanza_no_arguments.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_not_canonical.go b/tests/stanza_not_canonical.go
index 88935e7..3473f80 100644
--- a/tests/stanza_not_canonical.go
+++ b/tests/stanza_not_canonical.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_spurious_cr.go b/tests/stanza_spurious_cr.go
index b898616..a1eddce 100644
--- a/tests/stanza_spurious_cr.go
+++ b/tests/stanza_spurious_cr.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stanza_valid_characters.go b/tests/stanza_valid_characters.go
index 049c683..74fc211 100644
--- a/tests/stanza_valid_characters.go
+++ b/tests/stanza_valid_characters.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_bad_tag.go b/tests/stream_bad_tag.go
index 822d731..e6a383b 100644
--- a/tests/stream_bad_tag.go
+++ b/tests/stream_bad_tag.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_bad_tag_second_chunk.go b/tests/stream_bad_tag_second_chunk.go
index f3b5059..bc3ffb0 100644
--- a/tests/stream_bad_tag_second_chunk.go
+++ b/tests/stream_bad_tag_second_chunk.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_bad_tag_second_chunk_full.go b/tests/stream_bad_tag_second_chunk_full.go
index c3dfbd3..58dd46f 100644
--- a/tests/stream_bad_tag_second_chunk_full.go
+++ b/tests/stream_bad_tag_second_chunk_full.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_empty_payload.go b/tests/stream_empty_payload.go
index 82b4e93..89e086b 100644
--- a/tests/stream_empty_payload.go
+++ b/tests/stream_empty_payload.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_last_chunk_empty.go b/tests/stream_last_chunk_empty.go
index ed33241..dcbcc0b 100644
--- a/tests/stream_last_chunk_empty.go
+++ b/tests/stream_last_chunk_empty.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_last_chunk_full.go b/tests/stream_last_chunk_full.go
index db7807a..09502e4 100644
--- a/tests/stream_last_chunk_full.go
+++ b/tests/stream_last_chunk_full.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_last_chunk_full_second.go b/tests/stream_last_chunk_full_second.go
index bb215ee..ceeec8a 100644
--- a/tests/stream_last_chunk_full_second.go
+++ b/tests/stream_last_chunk_full_second.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_missing_tag.go b/tests/stream_missing_tag.go
index b0e7843..a0d407f 100644
--- a/tests/stream_missing_tag.go
+++ b/tests/stream_missing_tag.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_no_chunks.go b/tests/stream_no_chunks.go
index d682427..c0114a3 100644
--- a/tests/stream_no_chunks.go
+++ b/tests/stream_no_chunks.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_no_final.go b/tests/stream_no_final.go
index a7021f7..da820de 100644
--- a/tests/stream_no_final.go
+++ b/tests/stream_no_final.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_no_final_full.go b/tests/stream_no_final_full.go
index 630dbdd..374a96e 100644
--- a/tests/stream_no_final_full.go
+++ b/tests/stream_no_final_full.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_no_final_two_chunks.go b/tests/stream_no_final_two_chunks.go
index 6745215..8b47572 100644
--- a/tests/stream_no_final_two_chunks.go
+++ b/tests/stream_no_final_two_chunks.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_no_final_two_chunks_full.go b/tests/stream_no_final_two_chunks_full.go
index a2b99dc..41c2f3c 100644
--- a/tests/stream_no_final_two_chunks_full.go
+++ b/tests/stream_no_final_two_chunks_full.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_no_nonce.go b/tests/stream_no_nonce.go
index 56f8d53..6fb3dd8 100644
--- a/tests/stream_no_nonce.go
+++ b/tests/stream_no_nonce.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_short_chunk.go b/tests/stream_short_chunk.go
index 982cfc9..27cb10d 100644
--- a/tests/stream_short_chunk.go
+++ b/tests/stream_short_chunk.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_short_nonce.go b/tests/stream_short_nonce.go
index 355fd16..6ba67e4 100644
--- a/tests/stream_short_nonce.go
+++ b/tests/stream_short_nonce.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_short_second_chunk.go b/tests/stream_short_second_chunk.go
index 4aac7af..7e16b0e 100644
--- a/tests/stream_short_second_chunk.go
+++ b/tests/stream_short_second_chunk.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_three_chunks.go b/tests/stream_three_chunks.go
index 5529a21..82df78a 100644
--- a/tests/stream_three_chunks.go
+++ b/tests/stream_three_chunks.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_trailing_garbage_long.go b/tests/stream_trailing_garbage_long.go
index e9d6b10..fd4b2ed 100644
--- a/tests/stream_trailing_garbage_long.go
+++ b/tests/stream_trailing_garbage_long.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_trailing_garbage_short.go b/tests/stream_trailing_garbage_short.go
index 73e7173..3ac584e 100644
--- a/tests/stream_trailing_garbage_short.go
+++ b/tests/stream_trailing_garbage_short.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_two_chunks.go b/tests/stream_two_chunks.go
index bb215ee..ceeec8a 100644
--- a/tests/stream_two_chunks.go
+++ b/tests/stream_two_chunks.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/stream_two_final_chunks.go b/tests/stream_two_final_chunks.go
index 6099fe0..3059fb3 100644
--- a/tests/stream_two_final_chunks.go
+++ b/tests/stream_two_final_chunks.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/version_unsupported.go b/tests/version_unsupported.go
index e1fc997..c9d477c 100644
--- a/tests/version_unsupported.go
+++ b/tests/version_unsupported.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519.go b/tests/x25519.go
index dd00564..52e1a90 100644
--- a/tests/x25519.go
+++ b/tests/x25519.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_bad_tag.go b/tests/x25519_bad_tag.go
index 82f9758..c6eb7b5 100644
--- a/tests/x25519_bad_tag.go
+++ b/tests/x25519_bad_tag.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_extra_argument.go b/tests/x25519_extra_argument.go
index 2974b0e..5febbdc 100644
--- a/tests/x25519_extra_argument.go
+++ b/tests/x25519_extra_argument.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_grease.go b/tests/x25519_grease.go
index 98f7148..8c95722 100644
--- a/tests/x25519_grease.go
+++ b/tests/x25519_grease.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_identity.go b/tests/x25519_identity.go
index f1b86e6..b7bc11c 100644
--- a/tests/x25519_identity.go
+++ b/tests/x25519_identity.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_long_file_key.go b/tests/x25519_long_file_key.go
index df59334..dd648fe 100644
--- a/tests/x25519_long_file_key.go
+++ b/tests/x25519_long_file_key.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_long_share.go b/tests/x25519_long_share.go
index eca52d4..de9cea3 100644
--- a/tests/x25519_long_share.go
+++ b/tests/x25519_long_share.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_low_order.go b/tests/x25519_low_order.go
index b27db75..e45c5bd 100644
--- a/tests/x25519_low_order.go
+++ b/tests/x25519_low_order.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_lowercase.go b/tests/x25519_lowercase.go
index 1c7bb94..cdb8384 100644
--- a/tests/x25519_lowercase.go
+++ b/tests/x25519_lowercase.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_multiple_recipients.go b/tests/x25519_multiple_recipients.go
index 983e0c6..993fa55 100644
--- a/tests/x25519_multiple_recipients.go
+++ b/tests/x25519_multiple_recipients.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_no_match.go b/tests/x25519_no_match.go
index a1644ab..5f3b4db 100644
--- a/tests/x25519_no_match.go
+++ b/tests/x25519_no_match.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_not_canonical_body.go b/tests/x25519_not_canonical_body.go
index b1bd4b5..6b22626 100644
--- a/tests/x25519_not_canonical_body.go
+++ b/tests/x25519_not_canonical_body.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_not_canonical_share.go b/tests/x25519_not_canonical_share.go
index d9696ca..d31b3ff 100644
--- a/tests/x25519_not_canonical_share.go
+++ b/tests/x25519_not_canonical_share.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main
 
diff --git a/tests/x25519_short_share.go b/tests/x25519_short_share.go
index 9210a7a..01ea193 100644
--- a/tests/x25519_short_share.go
+++ b/tests/x25519_short_share.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 //go:build ignore
+// +build ignore
 
 package main