diff --git a/composer.json b/composer.json
index 26d0388..916fed9 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
 	],
 	"require": {
 		"php": ">=7.1.3",
-		"composer/installers": "~1.0"
+		"composer/installers": "^1.0 || ^2.0"
 	},
 	"require-dev": {
 		"phing/phing": "~2.4"
@@ -39,7 +39,7 @@
 	"extra": {
 		"display-name": "phpBB Media Embed PlugIn",
 		"soft-require": {
-			"phpbb/phpbb": ">=3.3.2,<4.0.0@dev"
+			"phpbb/phpbb": ">=3.3.2"
 		},
 		"version-check": {
 			"host": "www.phpbb.com",
diff --git a/styles/all/template/event/posting_editor_buttons_custom_tags_before.html b/styles/all/template/event/posting_editor_buttons_custom_tags_before.html
index 16087f7..7f6dfd9 100644
--- a/styles/all/template/event/posting_editor_buttons_custom_tags_before.html
+++ b/styles/all/template/event/posting_editor_buttons_custom_tags_before.html
@@ -1,5 +1,9 @@
 {% if S_BBCODE_MEDIA %}
 <button type="button" class="button button-icon-only bbcode-media" accesskey="m" name="addmedia" value="Media" onclick="bbfontstyle('[media]', '[/media]');" title="{{ lang('BBCODE_MEDIA_HELP') }}">
-	<i class="icon fa-television fa-fw" aria-hidden="true"></i>
+	{% if constant('PHPBB_VERSION') starts with '4' %}
+		{{ include('@phpbb_mediaembed/media_embed_bbcode_icon.html') }}
+	{% else %}
+		<i class="icon fa-television fa-fw" aria-hidden="true"></i>
+	{% endif %}
 </button>
 {% endif %}
diff --git a/styles/all/template/media_embed_bbcode_icon.html b/styles/all/template/media_embed_bbcode_icon.html
new file mode 100644
index 0000000..bf5f0de
--- /dev/null
+++ b/styles/all/template/media_embed_bbcode_icon.html
@@ -0,0 +1,2 @@
+{# This template will be used in phpBB 4 #}
+{{ Icon('font', 'tv', '', true, 'fas c-button-icon') }}
diff --git a/tests/functional/media_embed_test.php b/tests/functional/media_embed_test.php
index 7f7e325..88d6f71 100644
--- a/tests/functional/media_embed_test.php
+++ b/tests/functional/media_embed_test.php
@@ -29,7 +29,12 @@ public function test_posting_media_bbcode()
 	{
 		$this->login();
 
-		$post = $this->create_topic(2, 'Media Embed Test Topic 1', "[media]https://youtu.be/$this->youtubeId[/media]");
+		$forum_id = 2;
+
+		$crawler = self::request('GET', "posting.php?mode=post&f={$forum_id}&sid={$this->sid}");
+		self::assertCount(1, $crawler->filter('button[name="addmedia"]'));
+
+		$post = $this->create_topic($forum_id, 'Media Embed Test Topic 1', "[media]https://youtu.be/$this->youtubeId[/media]");
 		$crawler = self::request('GET', "viewtopic.php?t={$post['topic_id']}&sid=$this->sid");
 		self::assertStringContainsString("//www.youtube-nocookie.com/embed/$this->youtubeId", $crawler->filter("#post_content{$post['topic_id']} iframe")->attr('src'));
 	}