diff --git a/scripts/upgrade b/scripts/upgrade
index 170e743..5ba8ef7 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -105,14 +105,17 @@ current_major_version=${current_version%%.*}
 # Define a function to execute commands with `occ`
 exec_occ() {
     # Backward compatibility to upgrade from older versions
-    if [ $current_major_version = "last" ] || [ $current_major_version -ge 24 ]
+    if [ $current_major_version = "last" ] || [ $current_major_version -ge 26 ]
     then
         NEXTCLOUD_PHP_VERSION=$phpversion
-    elif [ $current_major_version -ge 15 ]
+    elif [ $current_major_version -ge 25 ]
+    then
+        NEXTCLOUD_PHP_VERSION="8.1"
+    elif [ $current_major_version -ge 18 ]
     then
         NEXTCLOUD_PHP_VERSION="7.4"
     else
-        NEXTCLOUD_PHP_VERSION="7.0"
+        NEXTCLOUD_PHP_VERSION="7.1"
     fi
 (cd "$install_dir" && ynh_exec_as "$app" \
     php$NEXTCLOUD_PHP_VERSION --define apc.enable_cli=1 occ --no-interaction --no-ansi "$@")