1 files changed, 3 insertions, 0 deletions
diff --git a/composer.json b/composer.json
index 4939a69..aeba55d 100644
--- a/composer.json
+++ b/composer.json
@@ -13,6 +13,9 @@
         "react/promise": "~2.2",
         "evenement/evenement": "~2.0"
     },
+    "require-dev": {
+        "phpunit/phpunit": "^5.0 || ^4.8.10"
+    },
     "autoload": {
         "psr-4": {
             "React\\HttpClient\\": "src"