diff --git a/composer.json b/composer.json
index ab47af1..76aff53 100755
--- a/composer.json
+++ b/composer.json
@@ -55,6 +55,9 @@
     },
     "config": {
         "optimize-autoloader": true,
-        "sort-packages": true
+        "sort-packages": true,
+        "allow-plugins": {
+            "composer/package-versions-deprecated": true
+        }
     }
 }