diff --git a/modules/base.nix b/modules/base.nix
index b512830..2fd06db 100644
--- a/modules/base.nix
+++ b/modules/base.nix
@@ -3,6 +3,7 @@
 {
   imports = [
     ./nix-auto-clean.nix
+    ./nix-cache.nix
     ./prometheus-node.nix
   ];
 }
diff --git a/modules/nix-cache.nix b/modules/nix-cache.nix
new file mode 100644
index 0000000..d29b614
--- /dev/null
+++ b/modules/nix-cache.nix
@@ -0,0 +1,12 @@
+{ pkgs, ... }:
+
+{
+  nix.settings = {
+    substituters = [
+      "http://builder.l"
+    ];
+    trusted-public-keys = [
+      "cache.lpm.feri.um.si:TwiF0KOXmbNihiysjGaH7EZOMHUvuwy+1mI/EHGc56M="
+    ];
+  };
+}