diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4f4acd3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+vendor/
+composer.lock
\ No newline at end of file
diff --git a/.travis.yml b/.travis.yml
index 334f8f9..d8a3a4d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,11 +3,11 @@ language: php
 sudo: false
 
 php:
-  - 5.4
-  - 5.5
-  - 5.6
   - 7.0
   - 7.1
+  - 7.2
+  - 7.3
+  - 7.4
   - 8.0
   - hhvm
 
diff --git a/composer.json b/composer.json
index cb29692..c47bb08 100644
--- a/composer.json
+++ b/composer.json
@@ -3,10 +3,10 @@
 	"description": "A collection of PHP classes for managing barcodes.",
 	"license": "GPL-3.0+",
 	"require": {
-		"php": "^5.0 || ^7.0"
+		"php": "^5.0 || ^7.0 || ^8.0"
 	},
 	"require-dev": {
-		"phpunit/phpunit": "~4.8|~5.7"
+		"phpunit/phpunit": "~4.8|~5.7|~8.0|~9.0"
 	},
 	"autoload": {
 		"psr-0" : {