diff --git a/flake.nix b/flake.nix
index 634ea93..9bc88f7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -34,6 +34,9 @@
             wasm-pack
           ];
 
+          # required, otherwise the dependencies are built for the host system
+          CARGO_BUILD_TARGET = "wasm32-unknown-unknown";
+
           overrideMain = (o: o // {
             buildPhase = ''
               runHook preBuild