diff --git a/.travis.yml b/.travis.yml
index 61ef2f0..d91ba38 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,6 +12,8 @@ matrix:
       env: LARAVEL_VERSION=5.3.*
     - php: 7.0
       env: LARAVEL_VERSION=5.4.*
+    - php: 7.0
+      env: LARAVEL_VERSION=5.5.*
     - php: 7.1
       env: LARAVEL_VERSION=5.1.*
     - php: 7.1
@@ -20,6 +22,8 @@ matrix:
       env: LARAVEL_VERSION=5.3.*
     - php: 7.1
       env: LARAVEL_VERSION=5.4.*
+    - php: 7.1
+      env: LARAVEL_VERSION=5.5.*
     - php: 7.2
       env: LARAVEL_VERSION=5.1.*
     - php: 7.2
@@ -28,6 +32,8 @@ matrix:
       env: LARAVEL_VERSION=5.3.*
     - php: 7.2
       env: LARAVEL_VERSION=5.4.*
+    - php: 7.2
+      env: LARAVEL_VERSION=5.5.*
 
 install:
   - composer require "laravel/framework:${LARAVEL_VERSION}" --no-update -n
diff --git a/README.md b/README.md
index 479c94c..179376d 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ A GitHub login provider for Laravel 5.
 
 ## Installation
 
-This version requires [PHP](https://php.net) 7, and supports Laravel 5.1, 5.2, 5.3, or 5.4.
+This version requires [PHP](https://php.net) 7, and supports Laravel 5.1, 5.2, 5.3, 5.4, or 5.5.
 
 To get the latest version, simply require the project using [Composer](https://getcomposer.org):
 
diff --git a/composer.json b/composer.json
index 4b85eea..318e99f 100644
--- a/composer.json
+++ b/composer.json
@@ -19,9 +19,9 @@
     ],
     "require": {
         "php": "^7.0",
-        "illuminate/contracts": "5.1.*|5.2.*|5.3.*|5.4.*",
-        "illuminate/http": "5.1.*|5.2.*|5.3.*|5.4.*",
-        "illuminate/support": "5.1.*|5.2.*|5.3.*|5.4.*",
+        "illuminate/contracts": "5.1.*|5.2.*|5.3.*|5.4.*|5.5.*",
+        "illuminate/http": "5.1.*|5.2.*|5.3.*|5.4.*|5.5.*",
+        "illuminate/support": "5.1.*|5.2.*|5.3.*|5.4.*|5.5.*",
         "guzzlehttp/guzzle": "^5.3.1|^6.2.1"
     },
     "require-dev": {