diff --git a/composer.json b/composer.json
index 07fec205..17ecef3a 100644
--- a/composer.json
+++ b/composer.json
@@ -29,14 +29,14 @@
     "license": "MIT",
     "require": {
         "php": ">=5.3",
-        "php-flasher/flasher": "^1.0",
-        "symfony/config": "^2.1|^3.0|^4.0|^5.0",
-        "symfony/dependency-injection": "^2.1|^3.0|^4.0|^5.0",
-        "symfony/http-kernel": "^2.1|^3.0|^4.0|^5.0",
-        "symfony/yaml": "^2.1|^3.0|^4.0|^5.0"
+        "php-flasher/flasher": "dev-main",
+        "symfony/config": "^2.7|^3.0|^4.0|^5.0",
+        "symfony/dependency-injection": "^2.7|^3.0|^4.0|^5.0",
+        "symfony/http-kernel": "^2.7|^3.0|^4.0|^5.0",
+        "symfony/yaml": "^2.7|^3.0|^4.0|^5.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "4.8.36",
+        "phpunit/phpunit": "^4.8|^5.7|^6.0|^7.0|^8.3|^9.0",
         "twig/twig": "^1.34|^2.0|^3.0"
     },
     "suggest": {
@@ -44,12 +44,12 @@
     },
     "autoload": {
         "psr-4": {
-            "Flasher\\Symfony\\": "src/"
+            "Flasher\\Symfony\\": ""
         }
     },
     "autoload-dev": {
         "psr-4": {
-            "Flasher\\Symfony\\Tests\\": "tests/"
+            "Flasher\\Symfony\\Tests\\": "Tests/"
         }
     },
     "config": {