diff --git a/modules/profile/nanuqsaurus.nix b/modules/profile/nanuqsaurus.nix
index 724d416..7d06f2b 100644
--- a/modules/profile/nanuqsaurus.nix
+++ b/modules/profile/nanuqsaurus.nix
@@ -1,9 +1,13 @@
 { inputs }:
 { pkgs, ... }:
 {
-  # Use Lix from nixpkgs (2.94.x on nixos-26.05). The lix-module's
-  # lixFromNixpkgs still pins lix_2_93, which nixos-26.05 removed.
-  nix.package = pkgs.lix;
+  # Pin explicitly to lix_2_94 rather than pkgs.lix (= lixPackageSets.stable),
+  # which nixpkgs could bump to 2.95+ in a point release. Lix 2.95 dropped
+  # builtins.fetchClosure (a knock-on of removing ca-derivations), which
+  # breaks Devbox. Fix is known but unmerged upstream as of 2026-10:
+  # https://github.com/jetify-com/devbox/issues/2983
+  # Revisit once that lands, or Devbox is dropped in favor of Flox.
+  nix.package = pkgs.lixPackageSets.lix_2_94.lix;
 
   imports = [
     inputs.nix-index-database.nixosModules.nix-index