diff --git a/composer.json b/composer.json
index ce1588f..2ef4540 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
     },
     "require": {
         "php": ">=5.4",
-        "guzzlehttp/guzzle": "~5.3.1|~6.0|^7.0"
+        "guzzlehttp/guzzle": "~6.5.6|^7.4.3"
     },
     "autoload": {
         "psr-4": {