diff --git a/composer.json b/composer.json
index 049a8d3d..b01a6b02 100644
--- a/composer.json
+++ b/composer.json
@@ -5,9 +5,9 @@
     "license": "MIT",
     
     "require": {
-        "php": "^7.1",
-         "ext-mbstring": "*",
-        "guzzlehttp/guzzle": "^7.0",
+        "php": "^7.1|^7.2|^7.3|^7.4|^8.0|^8.1",
+        "ext-mbstring": "*",
+        "guzzlehttp/guzzle": "^7.0|^7.1|^7.2|^7.3|^7.4",
         "kornrunner/keccak": "~1.0",
         "phpseclib/phpseclib": "~2.0.11"
     },