diff --git a/debian/control b/debian/control
index 08536b755..2559ab2df 100644
--- a/debian/control
+++ b/debian/control
@@ -16,6 +16,7 @@ Build-Depends-Indep: libapache-session-perl,
                      libcrypt-openssl-x509-perl,
                      libcrypt-urandom-perl,
                      libcrypt-rijndael-perl,
+                     libdatetime-format-rfc3339-perl,
                      libdbd-sqlite3-perl,
                      libdbi-perl,
                      libdigest-hmac-perl,
@@ -280,6 +281,7 @@ Recommends: libcrypt-openssl-bignum-perl,
             libnet-ldap-perl,
             libunicode-string-perl
 Suggests: libcrypt-u2f-server-perl,
+          libdatetime-format-rfc3339-perl,
           libdbi-perl,
           libglib-perl,
           libgssapi-perl,
diff --git a/lemonldap-ng-portal/META.json b/lemonldap-ng-portal/META.json
index 199d9626c..ba5de1cc1 100644
--- a/lemonldap-ng-portal/META.json
+++ b/lemonldap-ng-portal/META.json
@@ -28,7 +28,10 @@
             "LWP::UserAgent" : "0",
             "MIME::Entity" : "0",
             "SOAP::Lite" : "0",
-            "String::Random" : "0"
+            "String::Random" : "0",
+            "Text::Unidecode" : "0",
+            "XML::LibXML" : "0",
+            "XML::Simple" : "0"
          }
       },
       "configure" : {
@@ -57,6 +60,7 @@
             "Net::OpenID::Consumer" : "0",
             "Net::OpenID::Server" : "0",
             "SOAP::Lite" : "0",
+            "Text::Unidecode" : "0",
             "Unicode::String" : "0",
             "Web::ID" : "0"
          },
diff --git a/lemonldap-ng-portal/META.yml b/lemonldap-ng-portal/META.yml
index 3f9183181..e09f1cad3 100644
--- a/lemonldap-ng-portal/META.yml
+++ b/lemonldap-ng-portal/META.yml
@@ -10,6 +10,9 @@ build_requires:
   MIME::Entity: '0'
   SOAP::Lite: '0'
   String::Random: '0'
+  Text::Unidecode: '0'
+  XML::LibXML: '0'
+  XML::Simple: '0'
 configure_requires:
   ExtUtils::MakeMaker: '0'
 dynamic_config: 1
@@ -43,6 +46,7 @@ recommends:
   Net::OpenID::Consumer: '0'
   Net::OpenID::Server: '0'
   SOAP::Lite: '0'
+  Text::Unidecode: '0'
   Unicode::String: '0'
   Web::ID: '0'
 requires:
diff --git a/lemonldap-ng-portal/Makefile.PL b/lemonldap-ng-portal/Makefile.PL
index 7c1bfe3e4..16426e4f0 100644
--- a/lemonldap-ng-portal/Makefile.PL
+++ b/lemonldap-ng-portal/Makefile.PL
@@ -9,28 +9,29 @@ WriteMakefile(
     LICENSE      => 'gpl',
     META_MERGE   => {
         'recommends' => {
-            'Convert::Base32'       => 0,
-            'DBI'                   => 0,
-            'Email::Sender'         => 1.300027,
-            'GD::SecurityImage'     => 0,
-            'Glib'                  => 0,
-            'HTTP::Message'         => 0,
-            'Image::Magick'         => 0,
-            'IO::String'            => 0,
-            'IPC::Run'              => 0,
-            'Lasso'                 => '2.3.0',
-            'LWP::UserAgent'        => 0,
-            'LWP::Protocol::https'  => 0,
-            'MIME::Entity'          => 0,
-            'Net::Facebook::Oauth2' => 0,
-            'Net::LDAP'             => 0.38,
-            'Net::OAuth'            => 0,
-            'Net::OpenID::Consumer' => 0,
-            'Net::OpenID::Server'   => 0,
-            'SOAP::Lite'            => 0,
-            'Text::Unidecode'       => 0,
-            'Unicode::String'       => 0,
-            'Web::ID'               => 0,
+            'Convert::Base32'         => 0,
+            'DBI'                     => 0,
+            'DateTime/Format/RFC3339' => 0,
+            'Email::Sender'           => 1.300027,
+            'GD::SecurityImage'       => 0,
+            'Glib'                    => 0,
+            'HTTP::Message'           => 0,
+            'Image::Magick'           => 0,
+            'IO::String'              => 0,
+            'IPC::Run'                => 0,
+            'Lasso'                   => '2.3.0',
+            'LWP::UserAgent'          => 0,
+            'LWP::Protocol::https'    => 0,
+            'MIME::Entity'            => 0,
+            'Net::Facebook::Oauth2'   => 0,
+            'Net::LDAP'               => 0.38,
+            'Net::OAuth'              => 0,
+            'Net::OpenID::Consumer'   => 0,
+            'Net::OpenID::Server'     => 0,
+            'SOAP::Lite'              => 0,
+            'Text::Unidecode'         => 0,
+            'Unicode::String'         => 0,
+            'Web::ID'                 => 0,
         },
         resources => {
             repository => {
@@ -49,16 +50,17 @@ WriteMakefile(
         },
     },
     BUILD_REQUIRES => {
-        'Convert::Base32' => 0,
-        'Email::Sender'   => 0,
-        'HTTP::Message'   => 0,
-        'LWP::UserAgent'  => 0,
-        'MIME::Entity'    => 0,
-        'SOAP::Lite'      => 0,
-        'String::Random'  => 0,
-        'Text::Unidecode' => 0,
-        'XML::LibXML'     => 0,
-        'XML::Simple'     => 0,
+        'Convert::Base32'         => 0,
+        'Email::Sender'           => 0,
+        'DateTime/Format/RFC3339' => 0,
+        'HTTP::Message'           => 0,
+        'LWP::UserAgent'          => 0,
+        'MIME::Entity'            => 0,
+        'SOAP::Lite'              => 0,
+        'String::Random'          => 0,
+        'Text::Unidecode'         => 0,
+        'XML::LibXML'             => 0,
+        'XML::Simple'             => 0,
     },
     PREREQ_PM => {
         'Clone'                  => 0,