diff --git a/composer.json b/composer.json
index 8cde9c7..3ef0668 100644
--- a/composer.json
+++ b/composer.json
@@ -10,9 +10,10 @@
         }
     ],
     "require": {
+        "php": "^7.1",
+        "josephlavin/tap": "^1.0",
         "sculpin/sculpin": "^3",
-        "tightenco/collect": "^5.8",
-        "josephlavin/tap": "^1.0"
+        "tightenco/collect": "^5.8"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^2.15",
diff --git a/composer.lock b/composer.lock
index 664b924..eba090f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "c6414f5b440058283f14445f290d6df4",
+    "content-hash": "9778a3f48980cbd2767f204f6c02b650",
     "packages": [
         {
             "name": "dflydev/ant-path-matcher",
@@ -4704,6 +4704,8 @@
     "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
-    "platform": [],
+    "platform": {
+        "php": "^7.1"
+    },
     "platform-dev": []
 }