diff --git a/README.md b/README.md
index eb2932b..d957914 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 
 Free and open-source content management framework.
 
-**Shipped version:** 8.9.20~ynh1
+**Shipped version:** 9.3.5~ynh1
 
 
 
diff --git a/README_fr.md b/README_fr.md
index 40f6e7f..ca57818 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -13,7 +13,7 @@ Si vous n'avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) pour
 
 Framework de gestion de contenu libre et open-source.
 
-**Version incluse :** 8.9.20~ynh1
+**Version incluse :** 9.3.5~ynh1
 
 
 
diff --git a/check_process b/check_process
index 5dca74e..686a278 100644
--- a/check_process
+++ b/check_process
@@ -16,13 +16,15 @@
 		setup_public=1
 		upgrade=1
 		# 8.7.1~ynh1
-		#upgrade=1	from_commit=f0af5b7a8e58615fe8ad73e3c1d6fe8d1369f061
+		# upgrade=1	from_commit=f0af5b7a8e58615fe8ad73e3c1d6fe8d1369f061
 		# 8.9.7~ynh1
 		upgrade=1	from_commit=08ca36cc16691ed64a11034c810f5adefb21186a
 		# 8.9.7~ynh2
 		upgrade=1	from_commit=69b57e0d7cd862e4e5aef0bfc2bc2634874602c4
 		# 8.9.15~ynh1
 		upgrade=1	from_commit=06baed57a0650ec9a9e4e0f3348298065c1207f2
+		# 8.9.20~ynh1
+		upgrade=1	from_commit=25e747e0cde5e9ae2005181946f7f6cd31c597a5
 		backup_restore=1
 		multi_instance=1
 		port_already_use=0
@@ -39,3 +41,5 @@ Notification=all
 		name=8.9.7~ynh2
 	; commit=06baed57a0650ec9a9e4e0f3348298065c1207f2
 		name=8.9.15~ynh1
+	; commit=25e747e0cde5e9ae2005181946f7f6cd31c597a5
+		name=8.9.20~ynh1
diff --git a/conf/composer.json b/conf/composer.json
index 7a5f38e..e5d85f0 100644
--- a/conf/composer.json
+++ b/conf/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "drupal/recommended-project",
-    "description": "Project template for Drupal 8 projects with a relocated document root",
+    "description": "Project template for Drupal 9 projects with a relocated document root",
     "type": "project",
     "license": "GPL-2.0-or-later",
     "homepage": "https://www.drupal.org/project/drupal",
@@ -15,14 +15,14 @@
         }
     ],
     "require": {
-        "composer/installers": "^1.2",
-        "drupal/core-composer-scaffold": "^8.8",
-        "drupal/core-project-message": "^8.8",
-        "drupal/core-recommended": "^8.8",
-        "drush/drush": "^9.7.1 | ^10.0.0"
+        "composer/installers": "^1.9",
+        "drupal/core-composer-scaffold": "^9.3",
+        "drupal/core-project-message": "^9.3",
+        "drupal/core-recommended": "^9.3",
+        "drush/drush": "^11.0.0"
     },
     "require-dev": {
-        "drupal/core-dev": "^8.8"
+        "drupal/core-dev": "^9.3"
     },
     "conflict": {
         "drupal/drupal": "*"
diff --git a/manifest.json b/manifest.json
index 6478b87..e99e43d 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "A content management framework written in PHP",
         "fr": "Un système de gestion de contenu écrit en PHP"
     },
-    "version": "8.9.20~ynh1",
+    "version": "9.3.5~ynh1",
     "url": "https://www.drupal.org",
     "upstream": {
         "license": "GPL-2.0-or-later",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 0fc0bdf..a2d8ed8 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -9,7 +9,7 @@ pkg_dependencies="curl"
 
 swap_needed=512
 
-YNH_PHP_VERSION="7.3"
+YNH_PHP_VERSION="7.4"
 
 extra_php_dependencies="php${YNH_PHP_VERSION}-fpm php${YNH_PHP_VERSION}-cli php${YNH_PHP_VERSION}-gd php${YNH_PHP_VERSION}-mysql php${YNH_PHP_VERSION}-xml php${YNH_PHP_VERSION}-ldap php${YNH_PHP_VERSION}-mbstring php${YNH_PHP_VERSION}-json php${YNH_PHP_VERSION}-simplexml php${YNH_PHP_VERSION}-curl"
 
diff --git a/scripts/upgrade b/scripts/upgrade
index a372969..c71de09 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -119,7 +119,10 @@ ynh_add_swap --size=$swap_needed
 #=================================================
 ynh_script_progression --message="Upgrading Composer..."
 
-ynh_install_composer --phpversion="$phpversion" --workdir="$final_path"
+mkdir -p "$final_path/.composer"
+ynh_add_config --template="../conf/composer.json" --destination="$final_path/composer.json"
+
+ynh_exec_warn_less ynh_composer_exec --phpversion="$phpversion" --workdir="$final_path" --commands="update"
 
 export PATH="$final_path/vendor/bin:$PATH"