diff --git a/lib/LDV.pm b/lib/LDV.pm
index 86b5208..6e971de 100644
--- a/lib/LDV.pm
+++ b/lib/LDV.pm
@@ -48,6 +48,7 @@ sub startup {
     $zb->get ('/') -> to(action => 'create');
     $zb->route('/:time', time => qr/\d+/)
       ->via('GET') -> to(action => 'view');
+    $zb->get('/prune') -> to(action => 'prune');
 
     my $root = $self->app->config->{zerobin}->{root};
     mkdir $self->app->home->rel_dir($root);
diff --git a/lib/LDV/Zerobin.pm b/lib/LDV/Zerobin.pm
index 7ce3569..e90934e 100644
--- a/lib/LDV/Zerobin.pm
+++ b/lib/LDV/Zerobin.pm
@@ -4,6 +4,7 @@ use strict;
 use warnings;
 use utf8;
 
+use POSIX qw(strftime);
 use Mojo::Base 'Mojolicious::Controller';
 use Mojo::JSON;
 use Mojo::Asset::File;
@@ -97,7 +98,20 @@ sub prune
   my ($self) = @_;
 
   eval {
-    die("not implemented\n"); 1;
+    my $time = time();
+    my $storage = $self->app->config->{zerobin}->{root};
+    my $files = $self->app->home->list_files($storage);
+    my $json = Mojo::JSON->new;
+    foreach my $file (@$files) {
+      next unless $file =~ m/^(\d+)\.json$/oi;
+      my $paste_time = $1;
+      my $path = "$storage/$file";
+      my $data = $json->decode($self->app->home->slurp_rel_file("$storage/$file"));
+      next if ($data->{expire} > $time); # not yet
+      my $date = strftime("%Y-%m-%d %H:%M", localtime($data->{expire}));
+      $self->app->log->info("Removing expired paste: $file ($date)");
+      unlink $self->_paste_path($paste_time);
+    } 1;
   } or do {
     chomp $@;
     $self->app->log->error($@);