diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..75449ae
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,16 @@
+language: php
+
+php:
+    - 5.3
+    - 5.4
+    - 5.5
+    - 5.6
+    - 7.0
+    - nightly
+    - hhvm
+
+install:
+    - composer install --prefer-dist
+
+script:
+    - ./bin/phpunit tests/
diff --git a/composer.json b/composer.json
index ac78465..c179ee1 100644
--- a/composer.json
+++ b/composer.json
@@ -9,10 +9,10 @@
     "API"
   ],
   "require": {
-    "php": ">=5.4,<8.0-DEV"
+    "php": ">=5.3,<8.0-DEV"
   },
   "require-dev": {
-    "phpunit/phpunit": "4.7.6"
+    "phpunit/phpunit": "^4.8"
   },
   "config": {
     "bin-dir": "bin"