diff --git a/.travis.yml b/.travis.yml
index e79144f..99ab01d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,14 +1,14 @@
 language: php
 
 php:
-  - 5.5
   - 5.6
-  - 7.0
-  - hhvm
+  - 7.1
+  - 7.2
+  - 7.3
 
 matrix:
   include:
-    - php: 5.5
+    - php: 5.6
       env: 'COMPOSER_FLAGS="--prefer-stable --prefer-lowest"'
 
 before_script:
diff --git a/composer.json b/composer.json
index 44ce036..9d58ceb 100644
--- a/composer.json
+++ b/composer.json
@@ -13,8 +13,8 @@
         "sparkphp/data": "self.version"
     },
     "require": {
-        "php": ">=5.5",
-        "nesbot/carbon": "^1"
+        "php": "^5.6|^7.1",
+        "nesbot/carbon": "^1|^2"
     },
     "require-dev": {
         "phpunit/phpunit": "^4.8|^5.0"