diff --git a/tests/darwinScrublist.nix b/tests/darwinScrublist.nix
index 3b282ab9d..90881e811 100644
--- a/tests/darwinScrublist.nix
+++ b/tests/darwinScrublist.nix
@@ -179,6 +179,7 @@ let
     "zoxide"
     "zplug"
     "zsh"
+    "zsh-history-substring-search"
     # keep-sorted end
   ];