diff --git a/.travis.yml b/.travis.yml
index bb4a859..5800803 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,14 +1,14 @@
 language: php
 
-php: 
+php:
   - 5.4
   - 5.5
   - 5.6
   - hhvm
 
 before_script:
-  - composer self-update
-  - composer require satooshi/php-coveralls:~0.6 --prefer-source --no-interaction --dev
+  - travis_retry composer self-update
+  - travis_retry composer require satooshi/php-coveralls:~0.6 --prefer-source --no-interaction --dev
 
 script: phpunit -c phpunit.xml --coverage-text
 
@@ -17,6 +17,5 @@ after_script:
 
 matrix:
   allow_failures:
-    - php: 5.6
     - php: hhvm
   fash_finish: true
diff --git a/src/Auth/Acl/Container.php b/src/Auth/Acl/Container.php
index 65df6fc..b0b931f 100644
--- a/src/Auth/Acl/Container.php
+++ b/src/Auth/Acl/Container.php
@@ -89,11 +89,10 @@ protected function initiate()
     /**
      * Assign single or multiple $roles + $actions to have access.
      *
-     * @param  string|array     $roles      A string or an array of roles
-     * @param  string|array     $actions    A string or an array of action name
-     * @param  bool             $allow
+     * @param  string|array    $roles      A string or an array of roles
+     * @param  string|array    $actions    A string or an array of action name
+     * @param  bool            $allow
      * @return $this
-     * @throws \InvalidArgumentException
      */
     public function allow($roles, $actions, $allow = true)
     {
@@ -120,8 +119,8 @@ public function can($action)
      * Verify whether given roles has sufficient roles to access the
      * actions based on available type of access.
      *
-     * @param  string|array     $roles      A string or an array of roles
-     * @param  string           $action     A string of action name
+     * @param  string|array $roles      A string or an array of roles
+     * @param  string       $action     A string of action name
      * @return bool
      * @throws \InvalidArgumentException
      */
diff --git a/src/Auth/Acl/Factory.php b/src/Auth/Acl/Factory.php
index 84e6cbe..86d99ac 100644
--- a/src/Auth/Acl/Factory.php
+++ b/src/Auth/Acl/Factory.php
@@ -23,7 +23,7 @@ class Factory
     /**
      * Construct a new Environment.
      *
-     * @param  \Orchestra\Auth\Guard|\Illuminate\Auth\Guard   $auth
+     * @param  \Orchestra\Auth\Guard    $auth
      */
     public function __construct(Guard $auth)
     {
diff --git a/src/Auth/Acl/Fluent.php b/src/Auth/Acl/Fluent.php
index a6b8321..d8b96f2 100644
--- a/src/Auth/Acl/Fluent.php
+++ b/src/Auth/Acl/Fluent.php
@@ -91,7 +91,7 @@ public function detach(array $keys)
     /**
      * Check if an id is set in the collection.
      *
-     * @param  integer  $id
+     * @param  int  $id
      * @return bool
      */
     public function exist($id)
@@ -214,7 +214,7 @@ public function rename($from, $to)
      * Get the ID from a key.
      *
      * @param  string   $key
-     * @return integer
+     * @return int
      */
     public function search($key)
     {