diff --git a/.gitignore b/.gitignore
index 5657f6e..86eddcb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,4 @@
-vendor
\ No newline at end of file
+composer.lock
+vendor
+
+.idea/
diff --git a/composer.json b/composer.json
index 2dfd3fa..251c7e0 100644
--- a/composer.json
+++ b/composer.json
@@ -14,10 +14,11 @@
     ],
     "require": {
         "php": ">=5.3.0",
-        "kriswallsmith/buzz": "*",
+        "kriswallsmith/buzz": "~0.17.1",
         "psr/log": "^1.0"
     },
     "require-dev": {
+        "phpunit/phpunit": "5.*",
         "symfony/symfony": "^2.0 || ^3.0"
     },
     "suggest": {