diff --git a/hosts/fw.cloonar.com/modules/podman.nix b/hosts/fw.cloonar.com/modules/podman.nix
index 40578f0..08025a5 100644
--- a/hosts/fw.cloonar.com/modules/podman.nix
+++ b/hosts/fw.cloonar.com/modules/podman.nix
@@ -8,7 +8,7 @@
   };
 
   environment.etc."containers/networks/podman.json" = {
-    source = pkgs.format.json.generate "podman.json" ({
+    source = pkgs.formats.json.generate "podman.json" ({
       cniVersion = "0.4.0";
       name = "servernet";
       plugins = [