diff --git a/conf/sql/common.sql b/conf/sql/common.sql
index 96a720b..c56f29f 100644
--- a/conf/sql/common.sql
+++ b/conf/sql/common.sql
@@ -1,2 +1 @@
 INSERT INTO wp_options VALUES('','http_authentication_options','a:8:{s:13:"allow_wp_auth";b:1;s:10:"auth_label";s:19:"HTTP authentication";s:9:"login_uri";s:40:"https://__DOMAIN_PATH__/wp-login.php";s:10:"logout_uri";s:28:"https://__DOMAIN_PATH__/";s:22:"additional_server_keys";s:13:"PHP_AUTH_USER";s:24:"auto_create_email_domain";s:0:"";s:10:"db_version";i:2;s:16:"auto_create_user";b:0;}','yes');
-INSERT INTO wp_options (option_id,option_name,option_value,autoload) VALUES('','WPLANG','__LANGUAGE__','yes') ON DUPLICATE KEY UPDATE option_value=VALUES(option_value);
diff --git a/scripts/install b/scripts/install
index e54a52e..008eb77 100644
--- a/scripts/install
+++ b/scripts/install
@@ -143,7 +143,7 @@ sudo yunohost app ssowatconf	# Régénère la configuration de SSOwat
 sudo systemctl reload nginx
 
 # Wordpress installation
-ynh_local_curl "/wp-admin/install.php?step=2" "&weblog_title=YunoBlog" "user_name=$admin_wordpress" "admin_password=$db_pwd" "admin_password2=$db_pwd" "admin_email=$admin_wordpress@$domain" "language=$language" "Submit=Install+WordPress"
+ynh_local_curl "/wp-admin/install.php?step=2" "&weblog_title=YunoBlog" "user_name=$admin_wordpress" "admin_password=$db_pwd" "admin_password2=$db_pwd" "admin_email=$admin_wordpress@$domain" "Submit=Install+WordPress"
 
 WARNING echo -n "Please wait during Wordpress installation"
 for i in `seq 1 300`
@@ -170,13 +170,19 @@ php $final_path/wp-cli.phar --allow-root plugin install http-authentication --pa
 
 # Replace variables in sql scripts
 ynh_replace_string "__DOMAIN_PATH__" "$domain$path_url" ../conf/sql/*.sql
-ynh_replace_string "__LANGUAGE__" "$language" ../conf/sql/*.sql
 ynh_replace_string "__DATE__" "$(date +%s)" ../conf/sql/*.sql
 
 # Charge les commandes sql communes à tous les scripts.
 # mysql --debug-check -u $db_user -p$db_pwd $db_user < ../conf/sql/common.sql
 ynh_mysql_connect_as $db_name $db_pwd $db_name < ../conf/sql/common.sql
 
+#=================================================
+# SET LANGUAGE
+#=================================================
+
+php $final_path/wp-cli.phar --allow-root --path=$final_path core language install $language
+php $final_path/wp-cli.phar --allow-root --path=$final_path core language activate $language
+
 #=================================================
 # CONFIGURE MULTISITE
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 85fa3ea..c5f304e 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -115,6 +115,14 @@ ynh_add_fpm_config
 # Verify the checksum and backup the file if it's different
 ynh_backup_if_checksum_is_different "$final_path/wp-config.php"
 
+#=================================================
+# UPDATE WORDPRESS' PLUGINS
+#=================================================
+
+sudo wget -nv https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar -O $final_path/wp-cli.phar
+php $final_path/wp-cli.phar --allow-root plugin update simple-ldap-login --path=$final_path
+php $final_path/wp-cli.phar --allow-root plugin update http-authentication --path=$final_path
+
 #=================================================
 # CONFIGURE MULTISITE
 #=================================================