diff --git a/lisp/init-prettier.el b/lisp/init-prettier.el
index 1074602..7f594e0 100644
--- a/lisp/init-prettier.el
+++ b/lisp/init-prettier.el
@@ -23,6 +23,7 @@
 
 (dolist (hook '(css-mode-hook
                 js-base-mode-hook
+                json-ts-mode-hook
                 typescript-mode-hook
                 typescript-ts-base-mode-hook))
   (add-hook hook #'prettier-mode))