diff --git a/manifest.json b/manifest.json
index 8c366f8..fa26fe2 100644
--- a/manifest.json
+++ b/manifest.json
@@ -18,7 +18,7 @@
         "email": "maniackc_dev@crudelis.fr"
     }],
     "requirements": {
-        "yunohost": ">= 4.2.3"
+        "yunohost": ">= 4.3.3"
     },
     "multi_instance": true,
     "services": [
diff --git a/scripts/install b/scripts/install
index 3d8ac96..716b9e1 100644
--- a/scripts/install
+++ b/scripts/install
@@ -59,6 +59,13 @@ ynh_app_setting_set --app=$app --key=admin_mail_html --value=1
 
 #=================================================
 # STANDARD MODIFICATIONS
+#=================================================
+# INSTALL DEPENDENCIES
+#=================================================
+ynh_script_progression --message="Installing dependencies..." --weight=1
+
+ynh_install_app_dependencies "php${phpversion}-fpm"
+
 #=================================================
 # CREATE A MYSQL DATABASE
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 30c3de3..db5936a 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -98,6 +98,12 @@ if [ -z "$with_sftp" ]; then
 	ynh_app_setting_set --app=$app --key=with_sftp --value=$with_sftp
 fi
 
+# If phpversion doesn't exist, create it
+if [ -z "$phpversion" ]; then
+	phpversion=$YNH_PHP_VERSION
+	ynh_app_setting_set --app=$app --key=phpversion --value=$phpversion
+fi
+
 # Cleaning legacy permissions
 if ynh_legacy_permissions_exists; then
 	ynh_legacy_permissions_delete_all
@@ -114,6 +120,13 @@ ynh_maintenance_mode_ON
 
 #=================================================
 # STANDARD UPGRADE STEPS
+#=================================================
+# INSTALL DEPENDENCIES
+#=================================================
+ynh_script_progression --message="Installing dependencies..." --weight=1
+
+ynh_install_app_dependencies "php${phpversion}-fpm"
+
 #=================================================
 # NGINX CONFIGURATION
 #=================================================