diff --git a/configuration/common/default.nix b/configuration/common/default.nix
index 8278180..df2363f 100644
--- a/configuration/common/default.nix
+++ b/configuration/common/default.nix
@@ -33,4 +33,8 @@
   services.openssh.passwordAuthentication = false;
   services.openssh.challengeResponseAuthentication = false;
   services.openssh.permitRootLogin = lib.mkDefault "no";
+
+  nixpkgs.overlays = [
+    (import ../../pkgs/overlay.nix)
+  ];
 }
diff --git a/pkgs/default.nix b/pkgs/default.nix
new file mode 100644
index 0000000..ccac36f
--- /dev/null
+++ b/pkgs/default.nix
@@ -0,0 +1,5 @@
+import <nixpkgs> {
+  overlays = [
+    (import ./overlay.nix)
+  ];
+}
diff --git a/pkgs/overlay.nix b/pkgs/overlay.nix
new file mode 100644
index 0000000..34f1de0
--- /dev/null
+++ b/pkgs/overlay.nix
@@ -0,0 +1,3 @@
+self: super: {
+  anycast_healthchecker = self.python3.pkgs.callPackage ./anycast_healthchecker {};
+}