diff --git a/lib/LANraragi/Controller/Config.pm b/lib/LANraragi/Controller/Config.pm
index 6ecfdb014..60c66907a 100644
--- a/lib/LANraragi/Controller/Config.pm
+++ b/lib/LANraragi/Controller/Config.pm
@@ -45,7 +45,8 @@ sub index {
         enablecryptofs  => $self->LRR_CONF->enable_cryptofs,
         hqthumbpages    => $self->LRR_CONF->get_hqthumbpages,
         csshead         => generate_themes_header($self),
-        tempsize        => get_tempsize
+        tempsize        => get_tempsize,
+        replacedupe     => $self->LRR_CONF->get_replacedupe
     );
 }
 
@@ -84,6 +85,7 @@ sub save_config {
         usedatemodified => ( scalar $self->req->param('usedatemodified') ? '1' : '0' ),
         enablecryptofs  => ( scalar $self->req->param('enablecryptofs')  ? '1' : '0' ),
         hqthumbpages    => ( scalar $self->req->param('hqthumbpages')    ? '1' : '0' ),
+        replacedupe     => ( scalar $self->req->param('replacedupe')     ? '1' : '0' ),
     );
 
     # Only add newpassword field as password if enablepass = 1
diff --git a/lib/LANraragi/Model/Config.pm b/lib/LANraragi/Model/Config.pm
index cef6d1a92..f39523810 100644
--- a/lib/LANraragi/Model/Config.pm
+++ b/lib/LANraragi/Model/Config.pm
@@ -182,5 +182,6 @@ sub enable_dateadded     { return &get_redis_conf( "usedateadded",    "1" ) }
 sub use_lastmodified     { return &get_redis_conf( "usedatemodified", "0" ) }
 sub enable_cryptofs      { return &get_redis_conf( "enablecryptofs",  "0" ) }
 sub get_hqthumbpages     { return &get_redis_conf( "hqthumbpages",    "0" ) }
+sub get_replacedupe      { return &get_redis_conf( "replacedupe",     "0" ) }
 
 1;
diff --git a/lib/LANraragi/Model/Upload.pm b/lib/LANraragi/Model/Upload.pm
index e2e99bc47..2a142f0f2 100644
--- a/lib/LANraragi/Model/Upload.pm
+++ b/lib/LANraragi/Model/Upload.pm
@@ -53,23 +53,31 @@ sub handle_incoming_file {
     #that the file it references still exists on the filesystem
     my $redis        = LANraragi::Model::Config->get_redis;
     my $redis_search = LANraragi::Model::Config->get_redis_search;
+    my $replace_dupe = LANraragi::Model::Config->get_replacedupe;
     my $isdupe       = $redis->exists($id) && -e $redis->hget( $id, "file" );
 
-    # Stop here if file is a dupe.
-    if ( -e $output_file || $isdupe ) {
+    # Stop here if file is a dupe and replacement is turned off.
+    if ((-e $output_file || $isdupe) && !$replace_dupe) {
 
         # Trash temporary file
         unlink $tempfile;
 
         # The file already exists
+        my $suffix = " Enable replace duplicated archive in config to replace old ones.";
         my $msg =
           $isdupe
-          ? "This file already exists in the Library."
-          : "A file with the same name is present in the Library.";
+          ? "This file already exists in the Library." . $suffix
+          : "A file with the same name is present in the Library." . $suffix;
 
         return ( 0, $id, $filename, $msg );
     }
 
+    # If we are replacing an existing one, just remove the old one first.
+    if ($replace_dupe) {
+        $logger->debug("Delete archive $id before replacing it.");
+        LANraragi::Utils::Database::delete_archive( $id );
+    }
+
     # Add the file to the database ourselves so Shinobu doesn't do it
     # This allows autoplugin to be ran ASAP.
     my $name = LANraragi::Utils::Database::add_archive_to_redis( $id, $output_file, $redis );
@@ -100,7 +108,7 @@ sub handle_incoming_file {
     }
 
     # Move the file to the content folder.
-    # Move to a .tmp first in case copy to the content folder takes a while...
+    # Move to a .upload first in case copy to the content folder takes a while...
     move( $tempfile, $output_file . ".upload" );
 
     # Then rename inside the content folder itself to proc Shinobu.
diff --git a/lib/LANraragi/Utils/Database.pm b/lib/LANraragi/Utils/Database.pm
index b3508683a..de197294a 100644
--- a/lib/LANraragi/Utils/Database.pm
+++ b/lib/LANraragi/Utils/Database.pm
@@ -199,7 +199,7 @@ sub build_json {
     return $arcdata;
 }
 
-#Deletes the archive with the given id from redis, and the matching archive file/thumbnail.
+# Deletes the archive with the given id from redis, and the matching archive file/thumbnail.
 sub delete_archive {
 
     my $id       = $_[0];
diff --git a/templates/templates_config/config_files.html.tt2 b/templates/templates_config/config_files.html.tt2
index 59d03b5e5..820d487ee 100644
--- a/templates/templates_config/config_files.html.tt2
+++ b/templates/templates_config/config_files.html.tt2
@@ -85,4 +85,18 @@
         If you want to clear those flags, click this button. <br>
         <br>
     </td>
-</tr>
\ No newline at end of file
+</tr>
+
+<tr>
+    <td class="option-td">
+        <h2 class="ih">Replace duplicated archive</h2>
+    </td>
+    <td class="config-td">
+        [% IF replacedupe %]
+        <input id="replacedupe" name="replacedupe" class="fa" type="checkbox" checked> [% ELSE %]
+        <input id="replacedupe" name="replacedupe" class="fa" type="checkbox"> [% END %]
+        <label for="replacedupe">
+            <br>If enabled, LANraragi will replace old archive when a duplicated one (of the same name) is added.
+        </label>
+    </td>
+</tr>