diff --git a/nix/configurations/vanadium/home/dev.nix b/nix/configurations/vanadium/home/dev.nix
index 6b9c1c7e..5415df86 100644
--- a/nix/configurations/vanadium/home/dev.nix
+++ b/nix/configurations/vanadium/home/dev.nix
@@ -47,4 +47,12 @@
   #     pkgs.vscode-extensions.vscjava.vscode-java-pack
   #   ];
   # };
+
+  # ghc.nix cache
+  nix = {
+    settings = {
+      extra-substituters = ["https://ghc-nix.cachix.org"];
+      extra-trusted-public-keys = ["ghc-nix.cachix.org-1:ziC/I4BPqeA4VbtOFpFpu6D1t6ymFvRWke/lc2+qjcg="];
+    };
+  };
 }