diff --git a/phpBB/includes/acp/acp_language.php b/phpBB/includes/acp/acp_language.php
index 43d6b32dbe..31fa428e36 100644
--- a/phpBB/includes/acp/acp_language.php
+++ b/phpBB/includes/acp/acp_language.php
@@ -121,15 +121,29 @@ class acp_language
 
 				$lang_iso = $lang_entries['lang_iso'];
 
-				$template->assign_vars(array(
-					'S_DETAILS'			=> true,
-					'U_ACTION'			=> $this->u_action . "&action=details&id=$lang_id",
-					'U_BACK'			=> $this->u_action,
+				/** @var \phpbb\language\language_file_helper $language_helper */
+				$language_helper = $phpbb_container->get('language.helper.language_file');
 
-					'LANG_LOCAL_NAME'	=> $lang_entries['lang_local_name'],
-					'LANG_ENGLISH_NAME'	=> $lang_entries['lang_english_name'],
-					'LANG_ISO'			=> $lang_iso,
-					'LANG_AUTHOR'		=> $lang_entries['lang_author'],
+				try
+				{
+					$lang_cfg = $language_helper->get_language_data_from_composer_file("{$phpbb_root_path}language/$lang_iso/composer.json");
+				}
+				catch (\DomainException $e)
+				{
+					trigger_error($user->lang['LANGUAGE_PACK_NOT_EXIST'] . adm_back_link($this->u_action), E_USER_WARNING);
+				}
+
+				$template->assign_vars(array(
+					'S_DETAILS'					=> true,
+					'U_ACTION'					=> $this->u_action . "&action=details&id=$lang_id",
+					'U_BACK'					=> $this->u_action,
+
+					'LANG_LOCAL_NAME'			=> $lang_entries['lang_local_name'],
+					'LANG_ENGLISH_NAME'			=> $lang_entries['lang_english_name'],
+					'LANG_ISO'					=> $lang_iso,
+					'LANG_VERSION'				=> $lang_cfg['version'],
+					'LANG_PHPBB_VERSION'		=> $lang_cfg['phpbb_version'],
+					'LANG_AUTHOR'				=> $lang_entries['lang_author'],
 					'L_MISSING_FILES'			=> $user->lang('THOSE_MISSING_LANG_FILES', $lang_entries['lang_local_name']),
 					'L_MISSING_VARS_EXPLAIN'	=> $user->lang('THOSE_MISSING_LANG_VARIABLES', $lang_entries['lang_local_name']),
 				));
diff --git a/phpBB/includes/acp/acp_styles.php b/phpBB/includes/acp/acp_styles.php
index 7d7b5b6b9f..b04ed3d652 100644
--- a/phpBB/includes/acp/acp_styles.php
+++ b/phpBB/includes/acp/acp_styles.php
@@ -462,7 +462,7 @@ class acp_styles
 		}
 
 		// Read style configuration file
-		$style_cfg = $this->read_style_cfg($style['style_path']);
+		$style_cfg = $this->read_style_composer_file($style['style_path']);
 
 		// Find all available parent styles
 		$list = $this->find_possible_parents($styles, $id);
@@ -611,13 +611,12 @@ class acp_styles
 			'STYLE_ID'			=> $style['style_id'],
 			'STYLE_NAME'		=> htmlspecialchars($style['style_name'], ENT_COMPAT),
 			'STYLE_PATH'		=> htmlspecialchars($style['style_path'], ENT_COMPAT),
-			'STYLE_VERSION'		=> htmlspecialchars($style_cfg['style_version'], ENT_COMPAT),
+			'STYLE_VERSION'		=> htmlspecialchars($style_cfg['version'], ENT_COMPAT),
 			'STYLE_COPYRIGHT'	=> strip_tags($style['style_copyright']),
 			'STYLE_PARENT'		=> $style['style_parent_id'],
 			'S_STYLE_ACTIVE'	=> $style['style_active'],
 			'S_STYLE_DEFAULT'	=> ($style['style_id'] == $this->default_style)
-			)
-		);
+		));
 	}
 
 	/**
@@ -985,7 +984,7 @@ class acp_styles
 			'STYLE_ID'				=> $style['style_id'],
 			'STYLE_NAME'			=> htmlspecialchars($style['style_name'], ENT_COMPAT),
 			'STYLE_VERSION'			=> $style_cfg['style_version'] ?? '-',
-			'STYLE_PHPBB_VERSION'	=> $style_cfg['phpbb_version'],
+			'STYLE_PHPBB_VERSION'	=> $this->read_style_composer_file($style['style_path'])['extra']['phpbb-version'],
 			'STYLE_PATH'			=> htmlspecialchars($style['style_path'], ENT_COMPAT),
 			'STYLE_COPYRIGHT'		=> strip_tags($style['style_copyright']),
 			'STYLE_ACTIVE'			=> $style['style_active'],
diff --git a/phpBB/phpbb/language/language_file_helper.php b/phpBB/phpbb/language/language_file_helper.php
index 75e890ac06..de395b64bd 100644
--- a/phpBB/phpbb/language/language_file_helper.php
+++ b/phpBB/phpbb/language/language_file_helper.php
@@ -101,10 +101,12 @@ class language_file_helper
 		}
 
 		return array(
-			'iso' => $data['extra']['language-iso'],
-			'name' => $data['extra']['english-name'],
-			'local_name' => $data['extra']['local-name'],
-			'author' => implode(', ', $authors),
+			'iso'			=> $data['extra']['language-iso'],
+			'name'			=> $data['extra']['english-name'],
+			'local_name'	=> $data['extra']['local-name'],
+			'author'		=> implode(', ', $authors),
+			'version'		=> $data['version'],
+			'phpbb_version'	=> $data['extra']['phpbb-version'],
 		);
 	}
 }