1 files changed, 5 insertions, 3 deletions
diff --git a/composer.json b/composer.json
index 3f0c041..e78e406 100644
--- a/composer.json
+++ b/composer.json
@@ -16,10 +16,12 @@
         }
     },
     "require": {
-        "container-interop/container-interop": "~1.1"
+        "php": ">=7.3",
+        "psr/container": "^1.0|^2.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4.5",
-        "athletic/athletic": "~0.1.8"
+        "phpunit/phpunit": "^9.0",
+        "athletic/athletic": "~0.1.8",
+        "mnapoli/hard-mode": "~0.3.0"
     }
 }