diff --git a/composer.json b/composer.json
index ab06640..462fb8f 100644
--- a/composer.json
+++ b/composer.json
@@ -12,12 +12,12 @@
     ],
     "require": {
         "php": "^7.1",
-        "illuminate/console": "^5.6",
-        "illuminate/support": "^5.6"
+        "illuminate/console": "~5.5.0|~5.6.0|~5.7.0",
+        "illuminate/support": "~5.5.0|~5.6.0|~5.7.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^7.0",
-        "orchestra/testbench": "^3.6"
+        "phpunit/phpunit": "^6.1|^7.0",
+        "orchestra/testbench": "~3.5.0|~3.6.0|~3.7.0"
     },
     "autoload": {
         "psr-4": {