diff --git a/pkgs/development/php-packages/psysh/default.nix b/pkgs/by-name/ps/psysh/package.nix
similarity index 100%
rename from pkgs/development/php-packages/psysh/default.nix
rename to pkgs/by-name/ps/psysh/package.nix
diff --git a/pkgs/top-level/php-packages.nix b/pkgs/top-level/php-packages.nix
index 43f6263cb817..7f752445b5b2 100644
--- a/pkgs/top-level/php-packages.nix
+++ b/pkgs/top-level/php-packages.nix
@@ -255,12 +255,11 @@ lib.makeScope pkgs.newScope (
       phpstan = callPackage ../development/php-packages/phpstan { };
 
       psalm = callPackage ../development/php-packages/psalm { };
-
-      psysh = callPackage ../development/php-packages/psysh { };
     }
     // lib.optionalAttrs config.allowAliases {
       phpcbf = throw "`phpcbf` is now deprecated, use `php-codesniffer` instead which contains both `phpcs` and `phpcbf`.";
       phpcs = throw "`phpcs` is now deprecated, use `php-codesniffer` instead which contains both `phpcs` and `phpcbf`.";
+      psysh = throw "`php8${lib.versions.minor php.version}Packages.psysh` is now deprecated, use `psysh`";
     };
 
     # This is a set of PHP extensions meant to be used in php.buildEnv