diff --git a/.travis.yml b/.travis.yml
index aea7453..7db411f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,9 @@
 language: php
 
 php:
-  - 7.2
   - 7.3
   - 7.4
+  - 8.0
 
 before_script:
   - composer self-update
@@ -14,4 +14,4 @@ script:
   - composer test
 
 after_success:
-  - php vendor/bin/php-coveralls --verbose
\ No newline at end of file
+  - php vendor/bin/php-coveralls --verbose
diff --git a/composer.json b/composer.json
index f21d18d..13e775a 100644
--- a/composer.json
+++ b/composer.json
@@ -9,13 +9,13 @@
     }
   ],
   "require": {
-    "php": "^7.2",
+    "php": ">=7.2",
     "thiagocfn/inscricaoestadual": "^1.1"
   },
   "require-dev": {
-    "phpunit/phpunit": "^8.4",
+    "phpunit/phpunit": "^8.4|^9.4",
     "orchestra/testbench": "^4.0",
-    "symplify/changelog-linker": "^6.1",
+    "symplify/changelog-linker": "^8.3",
     "php-coveralls/php-coveralls": "^2.2",
     "squizlabs/php_codesniffer": "*",
     "phpstan/phpstan": "^0.12.5"