diff --git a/pkgs/development/php-packages/phpstan/default.nix b/pkgs/development/php-packages/phpstan/default.nix
index 048ae71ff299..90486c8c3992 100644
--- a/pkgs/development/php-packages/phpstan/default.nix
+++ b/pkgs/development/php-packages/phpstan/default.nix
@@ -11,7 +11,8 @@ mkDerivation {
     sha256 = "0f8858w9b421s3dfz8a56g0mik4zyi1lp88lijw4zs2d94dcdl9s";
   };
 
-  phases = [ "installPhase" ];
+  dontUnpack = true;
+
   nativeBuildInputs = [ makeWrapper ];
 
   installPhase = ''