diff --git a/lib/Crypt/AuthEnc/CCM.pm b/lib/Crypt/AuthEnc/CCM.pm
index 584f163..b35904c 100644
--- a/lib/Crypt/AuthEnc/CCM.pm
+++ b/lib/Crypt/AuthEnc/CCM.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw( ccm_encrypt_authenticate ccm_decrypt_verify )] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/AuthEnc/ChaCha20Poly1305.pm b/lib/Crypt/AuthEnc/ChaCha20Poly1305.pm
index 9a9517f..63c60ed 100644
--- a/lib/Crypt/AuthEnc/ChaCha20Poly1305.pm
+++ b/lib/Crypt/AuthEnc/ChaCha20Poly1305.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw( chacha20poly1305_encrypt_authenticate chacha20poly1305_decrypt_verify )] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/AuthEnc/EAX.pm b/lib/Crypt/AuthEnc/EAX.pm
index f80b60b..cb4f446 100644
--- a/lib/Crypt/AuthEnc/EAX.pm
+++ b/lib/Crypt/AuthEnc/EAX.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw( eax_encrypt_authenticate eax_decrypt_verify )] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/AuthEnc/GCM.pm b/lib/Crypt/AuthEnc/GCM.pm
index 41cc91e..3873f20 100644
--- a/lib/Crypt/AuthEnc/GCM.pm
+++ b/lib/Crypt/AuthEnc/GCM.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw( gcm_encrypt_authenticate gcm_decrypt_verify )] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/AuthEnc/OCB.pm b/lib/Crypt/AuthEnc/OCB.pm
index c12985f..8aae3a8 100644
--- a/lib/Crypt/AuthEnc/OCB.pm
+++ b/lib/Crypt/AuthEnc/OCB.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw( ocb_encrypt_authenticate ocb_decrypt_verify )] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/Checksum.pm b/lib/Crypt/Checksum.pm
index 2977ede..6f9f9f0 100644
--- a/lib/Crypt/Checksum.pm
+++ b/lib/Crypt/Checksum.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw/ adler32_data adler32_data_hex adler32_data_int adler32_file adler32_file_hex adler32_file_int
                                  crc32_data crc32_data_hex crc32_data_int crc32_file crc32_file_hex crc32_file_int /] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
diff --git a/lib/Crypt/Digest.pm b/lib/Crypt/Digest.pm
index 66664b2..c614781 100644
--- a/lib/Crypt/Digest.pm
+++ b/lib/Crypt/Digest.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw( digest_data digest_data_hex digest_data_b64 digest_data_b64u digest_file digest_file_hex digest_file_b64 digest_file_b64u )] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/KeyDerivation.pm b/lib/Crypt/KeyDerivation.pm
index a307a9b..5074fa8 100644
--- a/lib/Crypt/KeyDerivation.pm
+++ b/lib/Crypt/KeyDerivation.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw(pbkdf1 pbkdf2 hkdf hkdf_expand hkdf_extract)] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/PK/DH.pm b/lib/Crypt/PK/DH.pm
index 6cdb57c..a09b767 100644
--- a/lib/Crypt/PK/DH.pm
+++ b/lib/Crypt/PK/DH.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw( dh_shared_secret )] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/PK/DSA.pm b/lib/Crypt/PK/DSA.pm
index 0e2f5f9..052bd5b 100644
--- a/lib/Crypt/PK/DSA.pm
+++ b/lib/Crypt/PK/DSA.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw( dsa_encrypt dsa_decrypt dsa_sign_message dsa_verify_message dsa_sign_hash dsa_verify_hash )] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/PK/ECC.pm b/lib/Crypt/PK/ECC.pm
index e706e0a..67b8085 100644
--- a/lib/Crypt/PK/ECC.pm
+++ b/lib/Crypt/PK/ECC.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw( ecc_encrypt ecc_decrypt ecc_sign_message ecc_verify_message ecc_sign_hash ecc_verify_hash ecc_shared_secret )] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/PK/Ed25519.pm b/lib/Crypt/PK/Ed25519.pm
index 32abf9e..7074ca6 100644
--- a/lib/Crypt/PK/Ed25519.pm
+++ b/lib/Crypt/PK/Ed25519.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw( )] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/PK/RSA.pm b/lib/Crypt/PK/RSA.pm
index a70ef44..44a02a5 100644
--- a/lib/Crypt/PK/RSA.pm
+++ b/lib/Crypt/PK/RSA.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw(rsa_encrypt rsa_decrypt rsa_sign_message rsa_verify_message rsa_sign_hash rsa_verify_hash)] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/PK/X25519.pm b/lib/Crypt/PK/X25519.pm
index b4a26d3..4e75170 100644
--- a/lib/Crypt/PK/X25519.pm
+++ b/lib/Crypt/PK/X25519.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw( )] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();
diff --git a/lib/Crypt/PRNG.pm b/lib/Crypt/PRNG.pm
index 24fff16..970ea7c 100644
--- a/lib/Crypt/PRNG.pm
+++ b/lib/Crypt/PRNG.pm
@@ -4,7 +4,7 @@
 use warnings;
 our $VERSION = '0.066_002';
 
-require Exporter; our @ISA = qw(Exporter); ### use Exporter 'import';
+require Exporter; our @ISA = qw(Exporter); ### use Exporter 5.57 'import';
 our %EXPORT_TAGS = ( all => [qw(random_bytes random_bytes_hex random_bytes_b64 random_bytes_b64u random_string random_string_from rand irand)] );
 our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
 our @EXPORT = qw();