diff --git a/.travis.yml b/.travis.yml
index eea3d48..ebc7063 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,8 @@ php:
   - '7.1'
   - '7.2'
   - '7.3'
+  - '7.4'
+  - '8.0'
 
 script:
   - composer install --prefer-dist
diff --git a/composer.json b/composer.json
index 3931c66..65ca71b 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
     }
   },
   "require": {
-    "php": "^7.1",
+    "php": ">=7.1",
     "ext-curl": "*",
     "ext-json": "*"
   },