diff --git a/.gitignore b/.gitignore
index 35448df6..1a2a6d7e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 # application stuff
+/node_modules/
 /uploads/*
 /templates_c/*
 /serendipity_config_local.inc.php
@@ -53,5 +54,6 @@ DEADJOE
 /.project
 .DS_Store
 *.git
+/tags.lock
 tests/phpunit.xml
 vagrant/*
diff --git a/composer.json b/composer.json
index 043b0225..0fceea8d 100644
--- a/composer.json
+++ b/composer.json
@@ -9,12 +9,23 @@
     ],
     "require": {
         "php": ">=7.0 <9.0",
+        "ext-pcre": "*",
+        "ext-xml": "*",
         "filp/whoops": "^2.14",
         "foxy/foxy": "^1.0.0",
         "katzgrau/klogger": "~1.0",
         "smarty/smarty": "~3.1.33",
         "voku/simple-cache": "4.*"
     },
+    "require-dev": {
+        "squizlabs/php_codesniffer": "^3.6"
+    },
+    "suggest": {
+        "ext-gd": "Install for graphics handling.",
+        "ext-iconv": "Install for language handling.",
+        "ext-zlib": "Install for compression handling.",
+        "ext-mbstring": "Install for better international language support."
+    },
     "autoload": {
         "psr-4": { "": "lib/" },
         "classmap": [ "include/" ]
@@ -25,14 +36,11 @@
         "apcu-autoloader": true,
         "optimize-autoloader": true,
         "platform": {
-            "php": "8.99.99"
+            "php": "7.99.99"
         },
         "sort-packages": true,
         "allow-plugins": {
             "foxy/foxy": true
         }
-    },
-    "require-dev": {
-        "squizlabs/php_codesniffer": "^3.6"
     }
 }
diff --git a/composer.lock b/composer.lock
index 026196b6..6add550a 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "3a29525c9d24bd4060b214c31c6d6c11",
+    "content-hash": "93e84a595e8454cb34524e9a3adde858",
     "packages": [
         {
             "name": "filp/whoops",
@@ -511,11 +511,13 @@
     "prefer-stable": true,
     "prefer-lowest": false,
     "platform": {
-        "php": ">=7.0 <9.0"
+        "php": ">=7.0 <9.0",
+        "ext-pcre": "*",
+        "ext-xml": "*"
     },
     "platform-dev": [],
     "platform-overrides": {
-        "php": "8.99.99"
+        "php": "7.99.99"
     },
     "plugin-api-version": "2.2.0"
 }