diff --git a/composer.json b/composer.json
index 0c55f59..8fd7ab7 100644
--- a/composer.json
+++ b/composer.json
@@ -16,10 +16,10 @@
         "guzzlehttp/guzzle": "~6.3.0",
         "guzzlehttp/psr7": "^1.6",
         "guzzlehttp/promises": "~1.0",
-        "mockery/mockery": "^0.9.7"
+        "mockery/mockery": "^1.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^8.0"
+        "phpunit/phpunit": "^5.0"
     },
     "suggest": {
         "ext-curl": "*",