update to 4.0.0

1 files changed, 7 insertions, 4 deletions

diff --git a/composer.json b/composer.json
index b49f953..b1515f3 100644
--- a/composer.json
+++ b/composer.json
@@ -27,16 +27,19 @@
         }
     ],
     "config": {
+        "platform": {
+            "php": "7.3.0"
+        },
         "optimize-autoloader": true,
         "sort-packages": true
     },
     "prefer-stable": true,
     "require": {
-        "php": "^7.0",
-        "sebastian/recursion-context": "^3.0"
+        "php": "^7.3",
+        "sebastian/recursion-context": "^4.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^6.0",
+        "phpunit/phpunit": "^9.0",
         "ext-mbstring": "*"
     },
     "autoload": {
@@ -46,7 +49,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "3.1.x-dev"
+            "dev-master": "4.0-dev"
         }
     }
 }