diff --git a/core/core-ui.el b/core/core-ui.el
index 5e0a632ce..1ad65ec20 100644
--- a/core/core-ui.el
+++ b/core/core-ui.el
@@ -343,10 +343,6 @@ read-only or not file-visiting."
   :hook ((prog-mode conf-mode) . highlight-numbers-mode)
   :config (setq highlight-numbers-generic-regexp "\\_<[[:digit:]]+\\(?:\\.[0-9]*\\)?\\_>"))
 
-;;;###package highlight-escape-sequences
-(def-package! highlight-escape-sequences
-  :hook ((prog-mode conf-mode) . highlight-escape-sequences-mode))
-
 ;;;###package rainbow-delimiters
 ;; Helps us distinguish stacked delimiter pairs, especially in parentheses-drunk
 ;; languages like Lisp.
diff --git a/core/packages.el b/core/packages.el
index e7fa99a2f..fdfe7cd54 100644
--- a/core/packages.el
+++ b/core/packages.el
@@ -14,8 +14,6 @@
 (package! all-the-icons)
 (package! hide-mode-line)
 (package! highlight-numbers)
-(package! highlight-escape-sequences
-  :recipe (:fetcher github :repo "hlissner/highlight-escape-sequences"))
 (unless (locate-library "display-line-numbers")
   (package! nlinum)
   (package! nlinum-hl)