diff --git a/config.el b/config.el
index 6994f4a..3cd43dd 100644
--- a/config.el
+++ b/config.el
@@ -54,3 +54,9 @@
   (add-to-list 'projectile-globally-ignored-files ".gitkeep"))
 ;; Set org-mode as the default
 (setq-default major-mode 'org-mode)
+;; Associate polymode to R markdown files
+(add-to-list 'auto-mode-alist '("\\.[rR]md\\'" . poly-markdown+R-mode))
+;; Keybindings for R markdown polymode
+(map! :map poly-markdown+R-mode-map
+      :n "RET" #'polymode-eval-chunk
+      :desc "Evaluate code block")