diff --git a/lemonldap-ng-portal/MANIFEST b/lemonldap-ng-portal/MANIFEST
index ea0a05c22..4f104ac52 100644
--- a/lemonldap-ng-portal/MANIFEST
+++ b/lemonldap-ng-portal/MANIFEST
@@ -367,6 +367,7 @@ site/htdocs/static/languages/vi.json
 site/htdocs/static/languages/zh.json
 site/templates/bootstrap/2fchoice.tpl
 site/templates/bootstrap/2fregisters.tpl
+site/templates/bootstrap/captcha.tpl
 site/templates/bootstrap/casBack2Url.tpl
 site/templates/bootstrap/checklogins.tpl
 site/templates/bootstrap/checkuser.tpl
diff --git a/lemonldap-ng-portal/t/41-Captcha.t b/lemonldap-ng-portal/t/41-Captcha.t
index d5ed9abf6..701e6ab9e 100644
--- a/lemonldap-ng-portal/t/41-Captcha.t
+++ b/lemonldap-ng-portal/t/41-Captcha.t
@@ -6,7 +6,7 @@ require 't/test-lib.pm';
 
 my $res;
 
-my $maintests = 18;
+my $maintests = 24;
 SKIP: {
     eval 'use GD::SecurityImage;use Image::Magick;';
     if ($@) {
@@ -47,7 +47,6 @@ m%<input name="password" type="text" class="form-control key" autocomplete="off"
       explain( $res->[2]->[0], '<img id="captcha" src="data:image/png;base64' );
 
     # Try to get captcha value
-
     my ( $ts, $captcha );
     ok( $ts = getCache()->get($token), ' Found token session' );
     $ts = eval { JSON::from_json($ts) };
@@ -113,6 +112,48 @@ m%<input name="password" type="text" class="form-control key" autocomplete="off"
     ok( $newtoken ne $token, ' Token is refreshed' );
     ok( $res->[2]->[0] =~ m#<img id="captcha" src="data:image/png;base64#,
         ' New captcha image inserted' );
+
+    # Try to renew captcha
+    ok( $res = $client->_get( '/renewcaptcha', accept => 'text/html' ),
+        'Unauth request to renew Captcha' );
+    my $json = eval { JSON::from_json( $res->[2]->[0] ) };
+    ok( ( defined $json->{newtoken} and $json->{newtoken} =~ /^\d{10}_\d+$/ ),
+        'New token has been received' )
+      or explain( $json->{newtoken}, 'NO token received' );
+    ok( (
+            defined $json->{newimage}
+              and $json->{newimage} =~ m%^data:image/png;base64,.+%
+        ),
+        'New image has been received'
+    ) or explain( $json->{newimage}, 'NO image received' );
+
+    # Try to submit new captcha
+    ok( $ts = getCache()->get( $json->{newtoken} ),
+        ' Found new token session' );
+    $ts = eval { JSON::from_json($ts) };
+    $query =
+      "user=dwho&password=dwho&captcha=$ts->{captcha}&token=$json->{newtoken}";
+    ok(
+        $res = $client->_post(
+            '/',
+            IO::String->new($query),
+            length => length($query)
+        ),
+        'Try to auth with new captcha value'
+    );
+    expectOK($res);
+    $id = expectCookie($res);
+    ok(
+        $res = $client->_get(
+            '/',
+            query  => 'url=aHR0cDovL3Rlc3QxLmV4YW1wbGUuY29tLw==',
+            cookie => "lemonldap=$id",
+            accept => 'text/html'
+        ),
+        'Auth request with redirection'
+    );
+    expectRedirection( $res, 'http://test1.example.com/' );
+    expectAuthenticatedAs( $res, 'dwho' );
 }
 count($maintests);