diff --git a/flake.nix b/flake.nix
index a2b39c2..0fe3a10 100644
--- a/flake.nix
+++ b/flake.nix
@@ -49,6 +49,9 @@
               gtk3
               pcre
               libepoxy
+
+              # Zig / webAssembly impl.
+              zig
             ];
             
             # see: https://discourse.nixos.org/t/flutter-run-d-linux-build-process-failed/16552/2