lib/PublicInbox/LeiMirror.pm | 3 +--

diff --git a/lib/PublicInbox/LeiMirror.pm b/lib/PublicInbox/LeiMirror.pm
index c3512d439e474d371dcf81d934a66d5561fe64de..279ce30e76d0e7c73ba7217750ad8f5439115d93 100644
--- a/lib/PublicInbox/LeiMirror.pm
+++ b/lib/PublicInbox/LeiMirror.pm
@@ -3,8 +3,7 @@ # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 
 # "lei add-external --mirror" support (also "public-inbox-clone");
 package PublicInbox::LeiMirror;
-use strict;
-use v5.10.1;
+use v5.12;
 use parent qw(PublicInbox::IPC);
 use IO::Uncompress::Gunzip qw(gunzip $GunzipError);
 use IO::Compress::Gzip qw(gzip $GzipError);