diff --git a/tests/composer.json b/tests/composer.json
index 3edd4a90..cf0da416 100644
--- a/tests/composer.json
+++ b/tests/composer.json
@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "PHP": ">=5.3.0",
+        "PHP": ">=7.1.0",
         "cs278/mktemp": "^1.2.0"
     },
     "suggest": {