diff --git a/default.nix b/default.nix
index 51a432bfa71277f1750ae3d00e59cdba077cd1c7..ff7ef12e059bfbdcb5fdf0a5a60fa440e96b4380 100644
--- a/default.nix
+++ b/default.nix
@@ -31,5 +31,8 @@ in pkgs.haskell-nix.project {
     packages.PaymentServer.components.library.pkgconfig = pkgs.lib.mkForce [
       [libchallenge_bypass_ristretto_ffi]
     ];
+    packages.PaymentServer.components.library.libs = pkgs.lib.mkForce [
+      libchallenge_bypass_ristretto_ffi
+    ];
   }];
 }