diff --git a/.travis.yml b/.travis.yml
index 76bbbfb..0e9b258 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,8 +13,9 @@ env:
   - SYMFONY_VERSION=2.4.*
   - SYMFONY_VERSION=2.5.*
   - SYMFONY_VERSION=2.6.*
+  - SYMFONY_VERSION=2.7.*
 
 before_script:
-  - composer require --prefer-source --dev symfony/process:${SYMFONY_VERSION}
+  - composer require symfony/process:${SYMFONY_VERSION}
 
 script: bin/phpunit
diff --git a/composer.json b/composer.json
index b471d4b..19d0b7e 100644
--- a/composer.json
+++ b/composer.json
@@ -18,13 +18,13 @@
     ],
     "require": {
         "php": ">=5.3.3",
-        "symfony/process": ">=2.2,<2.7"
+        "symfony/process": "~2.2"
     },
     "suggest": {
         "symfony/filesystem": "Allows using Symfony Filesystem"
     },
     "require-dev": {
-        "phpunit/phpunit": "4.6.*",
+        "phpunit/phpunit": "4.6",
         "mockery/mockery": "~0.9"
     },
     "autoload": {