diff --git a/core/siren-core-modules.el b/core/siren-core-modules.el
index f69ef65..ad59038 100644
--- a/core/siren-core-modules.el
+++ b/core/siren-core-modules.el
@@ -158,6 +158,7 @@
 (require 'siren-sql)
 (require 'siren-text-mode)
 (require 'siren-thrift)
+(require 'siren-toml)
 (require 'siren-typescript)
 (require 'siren-web-mode)
 (require 'siren-xml)
diff --git a/modules/languages/siren-toml.el b/modules/languages/siren-toml.el
new file mode 100644
index 0000000..3b2ae00
--- /dev/null
+++ b/modules/languages/siren-toml.el
@@ -0,0 +1,24 @@
+;;; siren-toml.el --- jimeh's Emacs Siren: toml-mode configuration.
+
+;;; Commentary:
+
+;; Basic configuration for toml-mode.
+
+;;; Code:
+
+(require 'siren-prettier-js)
+(require 'siren-prog-mode)
+
+(use-package toml-mode
+  :ensure nil ;; loaded from emacs built-ins
+  :mode "\\.toml\\'"
+  :hook (toml-mode . siren-toml-mode-setup)
+
+  :init
+  (defun siren-toml-mode-setup ()
+    (run-hooks 'prog-mode-hook)
+    (setq tab-width 2)
+    (prettier-js-mode)))
+
+(provide 'siren-toml)
+;;; siren-toml.el ends here