diff --git a/manifest.json b/manifest.json
index e033036..33d1838 100644
--- a/manifest.json
+++ b/manifest.json
@@ -14,7 +14,7 @@
         "email": "felix@piedallu.me"
     },
     "requirements": {
-        "yunohost": ">= 3.7.0"
+        "yunohost": ">= 4.1.0"
     },
     "multi_instance": true,
     "services": [
diff --git a/scripts/install b/scripts/install
index 8ed81b4..29f9805 100644
--- a/scripts/install
+++ b/scripts/install
@@ -179,7 +179,7 @@ ynh_replace_string --target_file="$final_path/LocalSettings.php" --match_string=
 
 "php$phpversion" "$final_path/maintenance/update.php"
 
-chown -R $app:$app "$final_path"
+chown -R $app:www-data "$final_path"
 
 #=================================================
 # SETUP SSOWAT
diff --git a/scripts/upgrade b/scripts/upgrade
index e0ccd2e..b58b32a 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -118,7 +118,7 @@ fi
 
 chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
-chown -R $app:$app "$final_path"
+chown -R $app:www-data "$final_path"
 
 #=================================================
 # NGINX CONFIGURATION
@@ -204,7 +204,7 @@ fi
 "php$phpversion" "$final_path/maintenance/update.php"
 
 # Set permissions on app files
-chown -R $app:$app "$final_path"
+chown -R $app:www-data "$final_path"
 
 #=================================================
 # GENERIC FINALIZATION