diff --git a/.travis.yml b/.travis.yml
index 440045b..5a2a16a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,24 +4,10 @@ matrix:
   include:
     - php: hhvm-3.18
       dist: trusty
-    - php: 5.3
-      dist: precise
-    - php: 5.4
-      dist: trusty
-    - php: 5.5
-      dist: trusty
-    - php: 5.6
-      dist: xenial
-    - php: 7.0
-      dist: xenial
-    - php: 7.1
-      dist: bionic
-    - php: 7.2
-      dist: bionic
-    - php: 7.3
-      dist: bionic
     - php: 7.4
       dist: bionic
+    - php: 8.0
+      dist: bionic
 
 install:
   - composer install --prefer-dist
diff --git a/Michelf/Markdown.php b/Michelf/Markdown.php
index 9cf4c77..61778ba 100644
--- a/Michelf/Markdown.php
+++ b/Michelf/Markdown.php
@@ -18,7 +18,7 @@ class Markdown implements MarkdownInterface {
 	 * Define the package version
 	 * @var string
 	 */
-	const MARKDOWNLIB_VERSION = "1.9.0";
+	const MARKDOWNLIB_VERSION = "2.0";
 
 	/**
 	 * Simple function interface - Initialize the parser and return the result
@@ -74,7 +74,7 @@ class Markdown implements MarkdownInterface {
 	 * Change to `true` to enable line breaks on \n without two trailling spaces
 	 * @var boolean
 	 */
-	public $hard_wrap = false;
+	public bool $hard_wrap = false;
 
 	/**
 	 * Predefined URLs and titles for reference links and images.
diff --git a/composer.json b/composer.json
index f02526d..9990ce1 100644
--- a/composer.json
+++ b/composer.json
@@ -18,12 +18,12 @@
 		}
 	],
 	"require": {
-		"php": ">=7.3"
+		"php": ">=7.4"
 	},
 	"autoload": {
  		"psr-4": { "Michelf\\": "Michelf/" }
 	},
 	"require-dev": {
-		"phpunit/phpunit": "^9.5"
+		"phpunit/phpunit": ">= 9.5"
 	}
 }