diff --git a/ansible/roles/emacs/files/util-tree-sitter.el b/ansible/roles/emacs/files/util-tree-sitter.el
index 34e27b5..39b89a2 100644
--- a/ansible/roles/emacs/files/util-tree-sitter.el
+++ b/ansible/roles/emacs/files/util-tree-sitter.el
@@ -3,4 +3,11 @@
         (rust "https://github.com/tree-sitter/tree-sitter-rust")
         ))
 
+;; Default to the max level of detail in treesitter highlighting. This
+;; can be overridden in each language's use-package call with:
+;;
+;;   :custom
+;;   (treesit-font-lock-level 3)
+(setq treesit-font-lock-level 4)
+
 (provide 'util-tree-sitter)