diff --git a/flake.nix b/flake.nix
index 8c2fffd..80c8e5f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -13,6 +13,7 @@
           nodejs_25
           cypress
           php85
+          php85Packages.composer
         ];
       };
     };