diff --git a/conf.org b/conf.org
index eb5390d..fdce55d 100644
--- a/conf.org
+++ b/conf.org
@@ -204,6 +204,23 @@ No need for startup screen, tool/menu/scrollbars, or backups
   ;; :hook
   ;; (csv-mode . (lambda () (csv-align-fields nil (point-min) (point-max)))))
 #+END_SRC
+** markdown-mode
+#+BEGIN_SRC emacs-lisp
+(use-package markdown-mode
+  :ensure t)
+#+END_SRC
+** polymode
+#+BEGIN_SRC emacs-lisp
+(use-package polymode
+  :ensure t
+  :after markdown-mode
+  :mode
+  (("\\.Rmd\\'" . poly-markdown+r-mode)
+   ("\\.rmd\\'" . poly-markdown+r-mode))
+  :config
+  (require 'poly-R)
+  (require 'poly-markdown))
+#+END_SRC
 * library
 A place for duct tape code that I developed (or lovingly stole from others)
 ** macros
diff --git a/init.el b/init.el
index e758588..60dcb58 100644
--- a/init.el
+++ b/init.el
@@ -21,7 +21,7 @@
  ;; If there is more than one, they won't work right.
  '(package-selected-packages
    (quote
-	(csv-mode company-ghc calf-org evil-magit magit yasnippet-snippets flycheck rainbow-delimiters-mode helm evil-collection haskell-mode fill-column-indicator gtklp delight browse-kill-ring evil-org-agenda evil-org evil calfw calfw-org yaml-mode which-key use-package systemd sudo-edit spaceline rainbow-mode rainbow-delimiters pkgbuild-mode pdf-tools org-bullets lua-mode ess elpy diff-hl beacon ace-window))))
+	(markdown-mode polymode csv-mode company-ghc calf-org evil-magit magit yasnippet-snippets flycheck rainbow-delimiters-mode helm evil-collection haskell-mode fill-column-indicator gtklp delight browse-kill-ring evil-org-agenda evil-org evil calfw calfw-org yaml-mode which-key use-package systemd sudo-edit spaceline rainbow-mode rainbow-delimiters pkgbuild-mode pdf-tools org-bullets lua-mode ess elpy diff-hl beacon ace-window))))
 (custom-set-faces
  ;; custom-set-faces was added by Custom.
  ;; If you edit it by hand, you could mess it up, so be careful.