diff --git a/lib/Subtitle/SSA/Event.pm b/lib/Subtitle/SSA/Event.pm
index 5a20ea4..ca158a6 100644
--- a/lib/Subtitle/SSA/Event.pm
+++ b/lib/Subtitle/SSA/Event.pm
@@ -25,26 +25,26 @@ my %FIELDS = (
 );
 
 # options:
-#  * version - 'ssa' for v4 or 'ass' for v4+
+#  * type - 'ssa' for v4 or 'ass' for v4+
 sub new {
   my ($class, %opts) = @_;
   my $self = {
-    _vers   => 'ass',
+    _type   => 'ass',
     _fields => \%FIELDS,
     _format => \@FIELDS_ASS,
     _prefix => 'Dialogue',
   };
 
-  if (my $v = $opts{version}) {
-    if ($v =~ m{^(ass|ssa)$}oi) {
-      $self->{_vers} = lc($v);
+  if (my $t = $opts{type}) {
+    if ($t =~ m{^(ass|ssa)$}oi) {
+      $self->{_type} = lc($t);
     } else {
-      die("unsupported event version $v");
+      die("unsupported event type $t");
     }
   }
 
   $self->{_format} = \@FIELDS_SSA
-    if $self->{_vers} eq 'ssa';
+    if $self->{_type} eq 'ssa';
 
   my @fields = @{ $self->{_format} };
   $self->{$_} = $FIELDS{$_}->{value}
diff --git a/lib/Subtitle/SSA/Record.pm b/lib/Subtitle/SSA/Record.pm
index 138aa4d..8eaae29 100644
--- a/lib/Subtitle/SSA/Record.pm
+++ b/lib/Subtitle/SSA/Record.pm
@@ -100,7 +100,7 @@ sub to_string {
   foreach my $field (@{ $self->{_format} }) {
     my $d = $self->{_fields}->{$field};
     my $v = $self->{$field} // $d->{value};
-    if ($d->{type} eq 'x' and $self->{_vers} eq 'ass') {
+    if ($d->{type} eq 'x' and $self->{_type} eq 'ass') {
       $v = sprintf '&H%08X', $v;
     } elsif ($d->{type} eq 'f') {
       $v = sprintf "%.2f", $v;
diff --git a/lib/Subtitle/SSA/Style.pm b/lib/Subtitle/SSA/Style.pm
index 9137074..da0ac17 100644
--- a/lib/Subtitle/SSA/Style.pm
+++ b/lib/Subtitle/SSA/Style.pm
@@ -39,26 +39,26 @@ my %FIELDS = (
 );
 
 # options:
-#  * version - 'ssa' for v4 or 'ass' for v4+
+#  * type - 'ssa' for v4 or 'ass' for v4+
 sub new {
   my ($class, %opts) = @_;
   my $self = {
-    _vers   => 'ass',
+    _type   => 'ass',
     _fields => \%FIELDS,
     _format => \@FIELDS_ASS,
     _prefix => 'Style',
   };
 
-  if (my $v = $opts{version}) {
-    if ($v =~ m{^(ass|ssa)$}oi) {
-      $self->{_vers} = lc($v);
+  if (my $t = $opts{type}) {
+    if ($t =~ m{^(ass|ssa)$}oi) {
+      $self->{_type} = lc($t);
     } else {
-      die("unsupported event version $v");
+      die("unsupported event type $t");
     }
   }
 
   $self->{_format} = \@FIELDS_SSA
-    if $self->{_vers} eq 'ssa';
+    if $self->{_type} eq 'ssa';
 
   my @fields = @{ $self->{_format} };
   $self->{$_} = $FIELDS{$_}->{value}
diff --git a/t/format-ssa-event.t b/t/format-ssa-event.t
index 2702106..fa93416 100644
--- a/t/format-ssa-event.t
+++ b/t/format-ssa-event.t
@@ -10,7 +10,7 @@ my ($fields, @fields, $format, $sample, $event, $output);
 # SSA format line
 $format = 'Format: Marked, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text';
 @fields = qw(marked start end style name marginl marginr marginv effect text);
-$event = Subtitle::SSA::Event->new(version => 'ssa');
+$event = Subtitle::SSA::Event->new(type => 'ssa');
 $fields = $event->parse_format_line($format);
 is(ref $fields, 'ARRAY');
 is_deeply($fields, \@fields);
@@ -18,13 +18,13 @@ is_deeply($fields, \@fields);
 # ASS format line
 $format = 'Format:Layer,Start,End,Style,Name,MarginL,MarginR,MarginV,Effect,Text';
 @fields = qw(layer start end style name marginl marginr marginv effect text);
-$event = Subtitle::SSA::Event->new(version => 'ass');
+$event = Subtitle::SSA::Event->new(type => 'ass');
 $fields = $event->parse_format_line($format);
 is(ref $fields, 'ARRAY');
 is_deeply($fields, \@fields);
 
 $sample  = 'Dialogue: Marked=0,0:01:50.15,0:01:54.15,Main,,0000,0000,0050,,Наступило новое утро';
-$event = Subtitle::SSA::Event->new(version => 'ssa');
+$event = Subtitle::SSA::Event->new(type => 'ssa');
 ok($event->parse($sample), "SSA event parsing test");
 is($event->{marked}          => 'Marked=0');
 is($event->{start}           => 110.15);
@@ -41,7 +41,7 @@ ok($output = $event->to_string(), 'converting SSA event to string');
 is($output => $sample);
 
 $sample  = 'Dialogue: 1,0:01:06.68,0:01:07.49,text three,,0000,0000,0000,,Я счастлив.';
-$event = Subtitle::SSA::Event->new(version => 'ass');
+$event = Subtitle::SSA::Event->new(type => 'ass');
 ok($event->parse($sample), "ASS event parsing test");
 is($event->{layer}           => 1);
 is($event->{start}           => 66.68);
diff --git a/t/format-ssa-style.t b/t/format-ssa-style.t
index 470e92b..edb3800 100644
--- a/t/format-ssa-style.t
+++ b/t/format-ssa-style.t
@@ -10,7 +10,7 @@ my ($fields, @fields, $format, $sample, $style, $output);
 # SSA format line
 $format = 'Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, TertiaryColour, BackColour, Bold, Italic, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, AlphaLevel, Encoding';
 @fields = qw(name fontname fontsize primarycolour secondarycolour tertiarycolour backcolour bold italic borderstyle outline shadow alignment marginl marginr marginv alphalevel encoding);
-$style = Subtitle::SSA::Style->new(version => 'ssa');
+$style = Subtitle::SSA::Style->new(type => 'ssa');
 $fields = $style->parse_format_line($format);
 is(ref $fields, 'ARRAY');
 is_deeply($fields, \@fields);
@@ -18,13 +18,13 @@ is_deeply($fields, \@fields);
 # ASS format line
 $format = 'Format:Name,Fontname,Fontsize,PrimaryColour,SecondaryColour,OutlineColour,BackColour,Bold,Italic,Underline,StrikeOut,ScaleX,ScaleY,Spacing,Angle,BorderStyle,Outline,Shadow,Alignment,MarginL,MarginR,MarginV,Encoding';
 @fields = qw(name fontname fontsize primarycolour secondarycolour outlinecolour backcolour bold italic underline strikeout scalex scaley spacing angle borderstyle outline shadow alignment marginl marginr marginv encoding);
-$style = Subtitle::SSA::Style->new(version => 'ass');
+$style = Subtitle::SSA::Style->new(type => 'ass');
 $fields = $style->parse_format_line($format);
 is(ref $fields, 'ARRAY');
 is_deeply($fields, \@fields);
 
 $sample  = 'Style: Default,Arial,20,11259130,33023,12582847,32,-1,0,1,2,1,2,10,10,2,0,204';
-$style = Subtitle::SSA::Style->new(version => 'ssa');
+$style = Subtitle::SSA::Style->new(type => 'ssa');
 ok($style->parse($sample), "SSA style parsing test");
 is($style->{name}            => 'Default');
 is($style->{fontname}        => 'Arial');
@@ -49,7 +49,7 @@ ok($output = $style->to_string(), 'converting SSA style to string');
 is($output, $sample);
 
 $sample  = 'Style: Default,Georgia,50,&H00F0F4F6,&H008D7127,&H00414B4C,&H00000000,0,0,0,0,100,95,0,0,1,3.5,0,2,11,11,13,204';
-$style = Subtitle::SSA::Style->new(version => 'ass');
+$style = Subtitle::SSA::Style->new(type => 'ass');
 ok($style->parse($sample), "ASS style parsing test");
 is($style->{name}            => 'Default');
 is($style->{fontname}        => 'Georgia');