diff --git a/.travis.yml b/.travis.yml
index 727cfa2..be39aaa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,8 @@ language: php
 
 php:
     - 7.4
+    - 8.0
+    - 8.1
 
 matrix:
     fast_finish: true
diff --git a/composer.json b/composer.json
index d30bd43..9b07feb 100644
--- a/composer.json
+++ b/composer.json
@@ -19,10 +19,10 @@
     ],
 
     "require": {
-        "php": "^7.4",
+        "php": ">=7.4",
         "comely-io/data-types": "^1.0",
         "guzzlehttp/guzzle": "^7.0",
-        "iexbase/web3.php": "^2.0.1",
+        "web3p/web3.php": "^0.1.16",
         "kornrunner/secp256k1": "^0.1.2",
         "simplito/elliptic-php": "^1.0",
         "ext-json": "*",