diff --git a/init.el b/init.el
index 7956e37..d7a8380 100644
--- a/init.el
+++ b/init.el
@@ -39,6 +39,7 @@
 
 ;; display line numbers on the left
 (add-hook 'prog-mode-hook #'display-line-numbers-mode)
+(add-hook 'yaml-mode-hook #'display-line-numbers-mode)
 
 ;; indicate changed lines in version-controlled files
 (global-diff-hl-mode)