diff --git a/README.md b/README.md
index f8d0464..0128b91 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ If you don't have YunoHost, please see [here](https://yunohost.org/#/install) to
 
 Backdrop CMS is a simple, lightweight, and easy-to-use Content Management System for building professional websites.
 
-**Shipped version:** 1.18.2
+**Shipped version:** 1.18.3
 
 ## Screenshots
 
diff --git a/README_fr.md b/README_fr.md
index 88f609f..67109a4 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -12,7 +12,7 @@ Si vous n’avez pas YunoHost, consultez [le guide](https://yunohost.org/#/insta
 
 Backdrop CMS is a simple, lightweight, and easy-to-use Content Management System for building professional websites.
 
-**Version incluse :** 1.18.2
+**Version incluse :** 1.18.3
 
 ## Captures d’écran
 
diff --git a/conf/app.src b/conf/app.src
index 47c9478..2fabc25 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/backdrop/backdrop/releases/download/1.18.2/backdrop.zip
-SOURCE_SUM=dc067c1608d5135882762112217f39a84534d9d24c5191d1ade6012d55082fde
+SOURCE_URL=https://github.com/backdrop/backdrop/releases/download/1.18.3/backdrop.zip
+SOURCE_SUM=fb82cb6020db15954ed23976c513d3d0f713aa1c77759be065106e4f57b2999b
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=zip
 SOURCE_IN_SUBDIR=true
diff --git a/manifest.json b/manifest.json
index 1ed7a68..2308e47 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
     "en": "Easy-to-use CMS for building professional websites",
     "fr": "CMS facile à utiliser pour créer des sites Web professionnels"
   },
-  "version": "1.18.2~ynh1",
+  "version": "1.18.3~ynh1",
   "url": "https://backdropcms.org/",
   "license": "GPL-2.0",
   "maintainer": {
diff --git a/scripts/upgrade b/scripts/upgrade
index 2416282..69a1bf9 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -81,35 +81,6 @@ ynh_system_user_create --username=$app --home_dir="$final_path"
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
 
-if [ "$upgrade_type" == "UPGRADE_APP" ]
-then
-	ynh_script_progression --message="Upgrading source files..." --weight=7
-
-	ynh_setup_source --dest_dir="$final_path"
-fi
-
-#=================================================
-# NGINX CONFIGURATION
-#=================================================
-ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2
-
-# Create a dedicated NGINX config
-ynh_add_nginx_config
-
-#=================================================
-# PHP-FPM CONFIGURATION
-#=================================================
-ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=2
-
-# Create a dedicated PHP-FPM config
-ynh_add_fpm_config --package="$extra_php_dependencies"
-
-#=================================================
-# SPECIFIC UPGRADE
-#=================================================
-# CONFIGURE BACKDROP
-#=================================================
-
 if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
 	ynh_script_progression --message="Reconfiguring Backdrop..." --weight=2
@@ -133,6 +104,22 @@ then
 	ynh_secure_remove --file="$tmpdir"
 fi
 
+#=================================================
+# NGINX CONFIGURATION
+#=================================================
+ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2
+
+# Create a dedicated NGINX config
+ynh_add_nginx_config
+
+#=================================================
+# PHP-FPM CONFIGURATION
+#=================================================
+ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=2
+
+# Create a dedicated PHP-FPM config
+ynh_add_fpm_config --package="$extra_php_dependencies"
+
 #=================================================
 # GENERIC FINALIZATION
 #=================================================