diff --git a/nix-conf/home/includes/zsh.nix b/nix-conf/home/includes/zsh.nix
index a70d7a9..7152b93 100644
--- a/nix-conf/home/includes/zsh.nix
+++ b/nix-conf/home/includes/zsh.nix
@@ -29,6 +29,7 @@
     enableCompletion = true;
     enableAutosuggestions = true;
     defaultKeymap = "emacs";
+    expireDuplicatesFirst = true;
     history = {
       size = 100000;
       save = 100000;