diff --git a/nixos/modules/programs/zsh/zsh-syntax-highlighting.nix b/nixos/modules/programs/zsh/zsh-syntax-highlighting.nix
index bc110134928..cec4be1cb01 100644
--- a/nixos/modules/programs/zsh/zsh-syntax-highlighting.nix
+++ b/nixos/modules/programs/zsh/zsh-syntax-highlighting.nix
@@ -26,6 +26,7 @@ in
           "brackets"
           "pattern"
           "cursor"
+          "regexp"
           "root"
           "line"
         ]));