diff --git a/nix/.stack.nix/cardano-wallet-core.nix b/nix/.stack.nix/cardano-wallet-core.nix
index 34141837e0e..732460701f3 100644
--- a/nix/.stack.nix/cardano-wallet-core.nix
+++ b/nix/.stack.nix/cardano-wallet-core.nix
@@ -94,6 +94,7 @@
             (hsPkgs.memory)
             (hsPkgs.network)
             (hsPkgs.QuickCheck)
+            (hsPkgs.quickcheck-instances)
             (hsPkgs.quickcheck-state-machine)
             (hsPkgs.random)
             (hsPkgs.servant)