Update composer.json

SpacePossum · sebastianbergmann · commit 3c98fc65c1b8 · 2018-01-29T13:50:17.000+01:00
diff --git a/composer.json b/composer.json
@@ -19,7 +19,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^6.2",
-        "symfony/process": "^2.x || ^3.3 || ^4"
+        "symfony/process": "^3.3 || ^4"
     },
     "autoload": {
         "classmap": [
