diff --git a/README.md b/README.md
index ba4ebf0..e495506 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# phpBB 3.2 & 3.3 Extension - phpBB.de Terms of Use
+# phpBB 3.3 Extension - phpBB.de Terms of Use
 
 ## Installation
 
@@ -18,7 +18,7 @@ Go to "ACP" > "Customise" > "Extensions" and enable the "Terms of Use" extension
 
 This extension adds one administrator permission. The permission can be found at "Administrative 
 permissions" in the tab 'Misc' > 'Can manage “Terms of Use“'. The role "Full Admin" gets it 
-automatically on install or update to v1.1.0. 
+automatically on installation. 
 
 ## Development
 
diff --git a/adm/style/acp_tou_ppsetup.html b/adm/style/acp_tou_ppsetup.html
index dea392f..aa0be3f 100644
--- a/adm/style/acp_tou_ppsetup.html
+++ b/adm/style/acp_tou_ppsetup.html
@@ -1,15 +1,11 @@
 {% include 'overall_header.html' %}
 
 <script type="text/javascript">
-	// <![CDATA[
-
 	var form_name = 'acp_tou_ppsetup';
 	var text_name = 'tou_custom_pp_text';
 	var load_draft = false;
 	var upload = false;
 	var imageTag = false;
-
-	// ]]>
 </script>
 
 <a id="maincontent"></a>
@@ -26,8 +22,8 @@ <h1>{{ lang('ACP_TOU_PPSETUP_TITLE') }}</h1>
 		<dl>
 			<dt><label for="tou_use_custom_pp">{{ lang('ACP_TOU_PPSETUP_USE_CUSTOM')}}{{ lang('COLON') }}</label><br><span>{{ lang('ACP_TOU_PPSETUP_USE_CUSTOM_EXPLAIN')}}</span></dt>
 			<dd>
-				<label><input type="radio" class="radio" id="tou_use_custom_pp" name="tou_use_custom_pp" value="1" {% if ACP_TOU_USE_CUSTOM_PP_ENABLED %}checked="checked"{% endif %}/> {{ lang('YES') }}</label>
-				<label><input type="radio" class="radio" name="tou_use_custom_pp" value="0" {% if not ACP_TOU_USE_CUSTOM_PP_ENABLED %}checked="checked"{% endif %}/> {{ lang('NO') }}</label>
+				<label><input type="radio" class="radio" id="tou_use_custom_pp" name="tou_use_custom_pp" value="1" {% if ACP_TOU_USE_CUSTOM_PP_ENABLED %}checked {% endif %}> {{ lang('YES') }}</label>
+				<label><input type="radio" class="radio" name="tou_use_custom_pp" value="0" {% if not ACP_TOU_USE_CUSTOM_PP_ENABLED %}checked {% endif %}> {{ lang('NO') }}</label>
 			</dd>
 		</dl>
 
@@ -56,13 +52,13 @@ <h1>{{ lang('ACP_TOU_PPSETUP_TITLE') }}</h1>
 
 			<dd style="margin-{S_CONTENT_FLOW_BEGIN}: 90px; margin-top: 5px;">
 				{% if S_BBCODE_ALLOWED %}
-				<label><input type="checkbox" class="radio" name="disable_bbcode"{% if S_BBCODE_DISABLE_CHECKED %} checked="checked"{% endif %} /> {{ lang('DISABLE_BBCODE') }}</label>
+				<label><input type="checkbox" class="radio" name="disable_bbcode"{% if S_BBCODE_DISABLE_CHECKED %} checked {% endif %}> {{ lang('DISABLE_BBCODE') }}</label>
 				{% endif %}
 				{% if S_SMILIES_ALLOWED %}
-				<label><input type="checkbox" class="radio" name="disable_smilies"{% if S_SMILIES_DISABLE_CHECKED %} checked="checked"{% endif %} /> {{ lang('DISABLE_SMILIES') }}</label>
+				<label><input type="checkbox" class="radio" name="disable_smilies"{% if S_SMILIES_DISABLE_CHECKED %} checked {% endif %}> {{ lang('DISABLE_SMILIES') }}</label>
 				{% endif %}
 				{% if S_LINKS_ALLOWED %}
-				<label><input type="checkbox" class="radio" name="disable_magic_url"{% if S_MAGIC_URL_DISABLE_CHECKED %} checked="checked"{% endif %} /> {{ lang('DISABLE_MAGIC_URL') }}</label>
+				<label><input type="checkbox" class="radio" name="disable_magic_url"{% if S_MAGIC_URL_DISABLE_CHECKED %} checked {% endif %}> {{ lang('DISABLE_MAGIC_URL') }}</label>
 				{% endif %}
 			</dd>
 			<dd style="margin-{S_CONTENT_FLOW_BEGIN}: 90px; margin-top: 10px;"><strong>{{ lang('OPTIONS') }}{{ lang('COLON') }} </strong>{{ BBCODE_STATUS }} :: {{ IMG_STATUS }} :: {{ FLASH_STATUS }} :: {{ URL_STATUS }} :: {{ SMILIES_STATUS }}</dd>
@@ -70,8 +66,8 @@ <h1>{{ lang('ACP_TOU_PPSETUP_TITLE') }}</h1>
 	</fieldset>
 
 	<fieldset class="submit-buttons">
-		<input class="button1" type="submit" id="submit" name="submit" value="{{ lang('SUBMIT') }}" />
-		<input class="button2" type="submit" name="preview" value="{{ lang('PREVIEW') }}" />
+		<input class="button1" type="submit" id="submit" name="submit" value="{{ lang('SUBMIT') }}">
+		<input class="button2" type="submit" name="preview" value="{{ lang('PREVIEW') }}">
 		{{ S_FORM_TOKEN }}
 	</fieldset>
 </form>
diff --git a/adm/style/acp_tou_settings.html b/adm/style/acp_tou_settings.html
index d0e288c..fe21c64 100644
--- a/adm/style/acp_tou_settings.html
+++ b/adm/style/acp_tou_settings.html
@@ -19,23 +19,23 @@ <h1>{{ lang('ACP_TOU_SETTINGS_TITLE') }}</h1>
 		<dl>
 			<dt><label for="tou_use_custom_tou">{{ lang('ACP_TOU_TOUSETUP_USE_CUSTOM')}}{{ lang('COLON') }}</label><br><span>{{ lang('ACP_TOU_TOUSETUP_USE_CUSTOM_EXPLAIN')}}</span></dt>
 			<dd>
-				<label><input type="radio" class="radio" id="tou_use_custom_tou" name="tou_use_custom_tou" value="1" {% if ACP_TOU_USE_CUSTOM_TOU_ENABLED %}checked="checked"{% endif %}/> {{ lang('YES') }}</label>
-				<label><input type="radio" class="radio" name="tou_use_custom_tou" value="0" {% if not ACP_TOU_USE_CUSTOM_TOU_ENABLED %}checked="checked"{% endif %}/> {{ lang('NO') }}</label>
+				<label><input type="radio" class="radio" id="tou_use_custom_tou" name="tou_use_custom_tou" value="1" {% if ACP_TOU_USE_CUSTOM_TOU_ENABLED %}checked {% endif %}> {{ lang('YES') }}</label>
+				<label><input type="radio" class="radio" name="tou_use_custom_tou" value="0" {% if not ACP_TOU_USE_CUSTOM_TOU_ENABLED %}checked {% endif %}> {{ lang('NO') }}</label>
 			</dd>
 		</dl>
 
 		<dl>
 			<dt><label for="tou_use_custom_pp">{{ lang('ACP_TOU_PPSETUP_USE_CUSTOM')}}{{ lang('COLON') }}</label><br><span>{{ lang('ACP_TOU_PPSETUP_USE_CUSTOM_EXPLAIN')}}</span></dt>
 			<dd>
-				<label><input type="radio" class="radio" id="tou_use_custom_pp" name="tou_use_custom_pp" value="1" {% if ACP_TOU_USE_CUSTOM_PP_ENABLED %}checked="checked"{% endif %}/> {{ lang('YES') }}</label>
-				<label><input type="radio" class="radio" name="tou_use_custom_pp" value="0" {% if not ACP_TOU_USE_CUSTOM_PP_ENABLED %}checked="checked"{% endif %}/> {{ lang('NO') }}</label>
+				<label><input type="radio" class="radio" id="tou_use_custom_pp" name="tou_use_custom_pp" value="1" {% if ACP_TOU_USE_CUSTOM_PP_ENABLED %}checked {% endif %}> {{ lang('YES') }}</label>
+				<label><input type="radio" class="radio" name="tou_use_custom_pp" value="0" {% if not ACP_TOU_USE_CUSTOM_PP_ENABLED %}checked {% endif %}> {{ lang('NO') }}</label>
 			</dd>
 		</dl>
 
 	</fieldset>
 
 	<fieldset class="submit-buttons">
-		<input class="button1" type="submit" id="submit" name="submit" value="{{ lang('SUBMIT') }}" />&nbsp;
+		<input class="button1" type="submit" id="submit" name="submit" value="{{ lang('SUBMIT') }}">&nbsp;
 		{{ S_FORM_TOKEN }}
 	</fieldset>
 </form>
diff --git a/adm/style/acp_tou_tousetup.html b/adm/style/acp_tou_tousetup.html
index 3232643..e98b40d 100644
--- a/adm/style/acp_tou_tousetup.html
+++ b/adm/style/acp_tou_tousetup.html
@@ -1,15 +1,11 @@
 {% include 'overall_header.html' %}
 
 <script type="text/javascript">
-	// <![CDATA[
-
 	var form_name = 'acp_tou_tousetup';
 	var text_name = 'tou_custom_tou_text';
 	var load_draft = false;
 	var upload = false;
 	var imageTag = false;
-
-	// ]]>
 </script>
 
 <a id="maincontent"></a>
@@ -26,8 +22,8 @@ <h1>{{ lang('ACP_TOU_TOUSETUP_TITLE') }}</h1>
 		<dl>
 			<dt><label for="tou_use_custom_tou">{{ lang('ACP_TOU_TOUSETUP_USE_CUSTOM')}}{{ lang('COLON') }}</label><br><span>{{ lang('ACP_TOU_TOUSETUP_USE_CUSTOM_EXPLAIN')}}</span></dt>
 			<dd>
-				<label><input type="radio" class="radio" id="tou_use_custom_tou" name="tou_use_custom_tou" value="1" {% if ACP_TOU_USE_CUSTOM_TOU_ENABLED %}checked="checked"{% endif %}/> {{ lang('YES') }}</label>
-				<label><input type="radio" class="radio" name="tou_use_custom_tou" value="0" {% if not ACP_TOU_USE_CUSTOM_TOU_ENABLED %}checked="checked"{% endif %}/> {{ lang('NO') }}</label>
+				<label><input type="radio" class="radio" id="tou_use_custom_tou" name="tou_use_custom_tou" value="1" {% if ACP_TOU_USE_CUSTOM_TOU_ENABLED %}checked {% endif %}> {{ lang('YES') }}</label>
+				<label><input type="radio" class="radio" name="tou_use_custom_tou" value="0" {% if not ACP_TOU_USE_CUSTOM_TOU_ENABLED %}checked {% endif %}> {{ lang('NO') }}</label>
 			</dd>
 		</dl>
 
@@ -56,13 +52,13 @@ <h1>{{ lang('ACP_TOU_TOUSETUP_TITLE') }}</h1>
 
 			<dd style="margin-{S_CONTENT_FLOW_BEGIN}: 90px; margin-top: 5px;">
 				{% if S_BBCODE_ALLOWED %}
-				<label><input type="checkbox" class="radio" name="disable_bbcode"{% if S_BBCODE_DISABLE_CHECKED %} checked="checked"{% endif %} /> {{ lang('DISABLE_BBCODE') }}</label>
+				<label><input type="checkbox" class="radio" name="disable_bbcode"{% if S_BBCODE_DISABLE_CHECKED %} checked {% endif %}> {{ lang('DISABLE_BBCODE') }}</label>
 				{% endif %}
 				{% if S_SMILIES_ALLOWED %}
-				<label><input type="checkbox" class="radio" name="disable_smilies"{% if S_SMILIES_DISABLE_CHECKED %} checked="checked"{% endif %} /> {{ lang('DISABLE_SMILIES') }}</label>
+				<label><input type="checkbox" class="radio" name="disable_smilies"{% if S_SMILIES_DISABLE_CHECKED %} checked {% endif %}> {{ lang('DISABLE_SMILIES') }}</label>
 				{% endif %}
 				{% if S_LINKS_ALLOWED %}
-				<label><input type="checkbox" class="radio" name="disable_magic_url"{% if S_MAGIC_URL_DISABLE_CHECKED %} checked="checked"{% endif %} /> {{ lang('DISABLE_MAGIC_URL') }}</label>
+				<label><input type="checkbox" class="radio" name="disable_magic_url"{% if S_MAGIC_URL_DISABLE_CHECKED %} checked {% endif %}> {{ lang('DISABLE_MAGIC_URL') }}</label>
 				{% endif %}
 			</dd>
 			<dd style="margin-{S_CONTENT_FLOW_BEGIN}: 90px; margin-top: 10px;"><strong>{{ lang('OPTIONS') }}{{ lang('COLON') }} </strong>{{ BBCODE_STATUS }} :: {{ IMG_STATUS }} :: {{ FLASH_STATUS }} :: {{ URL_STATUS }} :: {{ SMILIES_STATUS }}</dd>
@@ -70,8 +66,8 @@ <h1>{{ lang('ACP_TOU_TOUSETUP_TITLE') }}</h1>
 	</fieldset>
 
 	<fieldset class="submit-buttons">
-		<input class="button1" type="submit" id="submit" name="submit" value="{{ lang('SUBMIT') }}" />
-		<input class="button2" type="submit" name="preview" value="{{ lang('PREVIEW') }}" />
+		<input class="button1" type="submit" id="submit" name="submit" value="{{ lang('SUBMIT') }}">
+		<input class="button2" type="submit" name="preview" value="{{ lang('PREVIEW') }}">
 		{{ S_FORM_TOKEN }}
 	</fieldset>
 </form>
diff --git a/composer.json b/composer.json
index 85a115d..9dc6d23 100644
--- a/composer.json
+++ b/composer.json
@@ -3,8 +3,8 @@
 	"type" : "phpbb-extension",
 	"description" : "Forces the user to confirm the terms of use.",
 	"homepage" : "https://github.com/phpbb-de/phpbb-ext-tou",
-	"version" : "1.1.5",
-	"time" : "2020-11-25",
+	"version" : "1.1.6",
+	"time" : "2024-06-23",
 	"license" : "GPL-2.0-only",
 	"authors" : [
 			{
@@ -21,7 +21,7 @@
 			}
 	],
 	"require" : {
-		"php" : ">=5.4.7"
+		"php" : ">=7.2.0"
 	},
 	"require-dev" : {
 		"phing/phing": "2.4.*"
@@ -29,7 +29,7 @@
 	"extra" : {
 		"display-name" : "Terms of use",
 		"soft-require" : {
-		  "phpbb/phpbb": ">=3.2.4,<4.0.0@dev"
+		  "phpbb/phpbb": ">=3.3.0,<4.0.0@dev"
 		}
 	},
 	"support" : {
diff --git a/controller/main.php b/controller/main.php
index cc8372f..33f7b98 100644
--- a/controller/main.php
+++ b/controller/main.php
@@ -119,7 +119,7 @@ public function handle()
 				$redirect = reapply_sid($redirect);
 
 				meta_refresh(3, $redirect);
-				trigger_error($message . '<br /><br />' . sprintf($l_redirect, '<a href="' . $redirect . '">', '</a>'));
+				trigger_error($message . '<br><br>' . sprintf($l_redirect, '<a href="' . $redirect . '">', '</a>'));
 			}
 			trigger_error('INVALID_FORM');
 		}
diff --git a/event/main.php b/event/main.php
index 86774ac..3c25fbc 100644
--- a/event/main.php
+++ b/event/main.php
@@ -19,7 +19,7 @@
  */
 class main implements EventSubscriberInterface
 {
-	static public function getSubscribedEvents()
+	public static function getSubscribedEvents()
 	{
 		return array(
 			'core.page_header'			=> 'page_header',
diff --git a/event/permission_listener.php b/event/permission_listener.php
index 6028638..2f8aecc 100644
--- a/event/permission_listener.php
+++ b/event/permission_listener.php
@@ -32,7 +32,7 @@ public function __construct(\phpbb\auth\auth $auth)
 		$this->auth = $auth;
 	}
 
-	static public function getSubscribedEvents()
+	public static function getSubscribedEvents()
 	{
 		return array(
 			'core.permissions' => 'permissions',
diff --git a/migrations/v110.php b/migrations/v110.php
index fc738ea..fc1bb02 100644
--- a/migrations/v110.php
+++ b/migrations/v110.php
@@ -12,7 +12,7 @@
 
 class v110 extends \phpbb\db\migration\migration
 {
-	static public function depends_on()
+	public static function depends_on()
 	{
 		return array(
 			'\phpbbde\tou\migrations\v_1_0_0',
diff --git a/migrations/v111.php b/migrations/v111.php
index c01c94a..b11de76 100644
--- a/migrations/v111.php
+++ b/migrations/v111.php
@@ -12,7 +12,7 @@
 
 class v111 extends \phpbb\db\migration\migration
 {
-	static public function depends_on()
+	public static function depends_on()
 	{
 		return array(
 			'\phpbbde\tou\migrations\v110',
diff --git a/migrations/v112.php b/migrations/v112.php
index fdbade6..07fc7f2 100644
--- a/migrations/v112.php
+++ b/migrations/v112.php
@@ -12,7 +12,7 @@
 
 class v112 extends \phpbb\db\migration\migration
 {
-	static public function depends_on()
+	public static function depends_on()
 	{
 		return array(
 			'\phpbbde\tou\migrations\v111',
diff --git a/migrations/v113.php b/migrations/v113.php
index ced33e3..beeeab8 100644
--- a/migrations/v113.php
+++ b/migrations/v113.php
@@ -12,7 +12,7 @@
 
 class v113 extends \phpbb\db\migration\migration
 {
-	static public function depends_on()
+	public static function depends_on()
 	{
 		return array(
 			'\phpbbde\tou\migrations\v112',
diff --git a/migrations/v114.php b/migrations/v114.php
index 26aee43..94586c8 100644
--- a/migrations/v114.php
+++ b/migrations/v114.php
@@ -12,7 +12,7 @@
 
 class v114 extends \phpbb\db\migration\migration
 {
-	static public function depends_on()
+	public static function depends_on()
 	{
 		return array(
 			'\phpbbde\tou\migrations\v113',
diff --git a/migrations/v115.php b/migrations/v115.php
index ac1c080..a6818c3 100644
--- a/migrations/v115.php
+++ b/migrations/v115.php
@@ -12,7 +12,7 @@
 
 class v115 extends \phpbb\db\migration\migration
 {
-	static public function depends_on()
+	public static function depends_on()
 	{
 		return array(
 			'\phpbbde\tou\migrations\v114',
diff --git a/migrations/v_1_0_0.php b/migrations/v_1_0_0.php
index d640825..f49039a 100644
--- a/migrations/v_1_0_0.php
+++ b/migrations/v_1_0_0.php
@@ -12,7 +12,7 @@
 
 class v_1_0_0 extends \phpbb\db\migration\migration
 {
-	static public function depends_on()
+	public static function depends_on()
 	{
 		return array(
 			'\phpbb\db\migration\data\v31x\v311',
diff --git a/styles/prosilver/template/tou_body.html b/styles/prosilver/template/tou_body.html
index 05e1df3..ce654ed 100644
--- a/styles/prosilver/template/tou_body.html
+++ b/styles/prosilver/template/tou_body.html
@@ -17,8 +17,8 @@ <h2 class="">{{ lang('PRIVACY') }}</h2>
 		<div class="inner">
 			<fieldset class="submit-buttons">
 				{% if not HAS_ALREADY_AGREED and S_REGISTERED_USER %}
-				<input type="submit" name="agreed" id="agreed" value="{{ lang('AGREE') }}" class="button1" />&nbsp;
-				<input type="submit" name="not_agreed" value="{{ lang('NOT_AGREE') }}" class="button2" />
+				<input type="submit" name="agreed" id="agreed" value="{{ lang('AGREE') }}" class="button1">&nbsp;
+				<input type="submit" name="not_agreed" value="{{ lang('NOT_AGREE') }}" class="button2">
 				{% endif %}
 				{{ S_FORM_TOKEN }}
 			</fieldset>