diff --git a/modules/home-manager/default.nix b/modules/home-manager/default.nix
index 67d74f19..46d63dcd 100644
--- a/modules/home-manager/default.nix
+++ b/modules/home-manager/default.nix
@@ -140,5 +140,7 @@ in
         cfg.programs
       ];
     };
+
+    sane.persist.home.plaintext = [ ".cache/nix-index" ];
   };
 }