diff --git a/modules/user/zsh.nix b/modules/user/zsh.nix
index 1ac26b7..73ba166 100644
--- a/modules/user/zsh.nix
+++ b/modules/user/zsh.nix
@@ -73,8 +73,12 @@
         TERM=xterm-256color
       '';
 
-      history.size = 10000;
-      history.path = "${config.xdg.dataHome}/zsh/history";
+      history = {
+        size = 10000;
+        path = "${config.xdg.dataHome}/zsh/history";
+        expireDuplicatesFirst = true;
+        ignoreDups = true;
+      };
 
       oh-my-zsh.enable = true;
     };