diff --git a/server/composer.json b/server/composer.json
index 199baab..c75bcc0 100644
--- a/server/composer.json
+++ b/server/composer.json
@@ -9,5 +9,10 @@
     "psr-4": {
       "Binch\\": "src/Binch"
     }
+  },
+  "config": {
+    "platform": {
+      "php": "7.4"
+    }
   }
 }
diff --git a/server/composer.lock b/server/composer.lock
index 61bbf77..d4f68b3 100644
--- a/server/composer.lock
+++ b/server/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "6c16e706497ec36b34b6d53f2f241be1",
+    "content-hash": "30dcb80a64eb0c0ff1475a4cd233b7f4",
     "packages": [
         {
             "name": "container-interop/container-interop",
@@ -35,6 +35,7 @@
             ],
             "description": "Promoting the interoperability of container objects (DIC, SL, etc.)",
             "homepage": "https://github.com/container-interop/container-interop",
+            "abandoned": "psr/container",
             "time": "2017-02-14T19:40:03+00:00"
         },
         {
@@ -519,5 +520,8 @@
     "platform": {
         "ext-json": "*"
     },
-    "platform-dev": []
+    "platform-dev": [],
+    "platform-overrides": {
+        "php": "7.4"
+    }
 }