This package can now be replaced by dired-omit-mode

[ai-oleynikov]

(use-package dired
  :bind
  (:map dired-mode-map ("." . dired-omit-mode))
  :config
  (setq dired-omit-files (rx (seq bol ".")))
  ;; To hide dot-files by default
  :hook
  (dired-mode . dired-omit-mode))

[pprevos]

You need to activate dired-x first:

(use-package dired
  :ensure nil
  :bind
  (:map dired-mode-map ("." . dired-omit-mode))
  :custom
  (dired-omit-files (rx (seq bol ".")))
  :hook
  (dired-mode . dired-omit-mode)
  :init
  (with-eval-after-load 'dired (require 'dired-x)))

[mattiasb]

Sorry had missed this. I actually switched to using dired-omit-mode with this regex now. Thanks!