diff --git a/hosts/git.cloonar.com/configuration.nix b/hosts/git.cloonar.com/configuration.nix
index 0adba2d..0cf6398 100644
--- a/hosts/git.cloonar.com/configuration.nix
+++ b/hosts/git.cloonar.com/configuration.nix
@@ -62,5 +62,10 @@
     allowedTCPPorts = [ 22 80 443 8000 ];
   };
 
+  nix.gc = {
+    automatic = true;
+    options = "--delete-older-than 60d";
+  }
+
   system.stateVersion = "23.05";
 }
diff --git a/hosts/mail.cloonar.com/configuration.nix b/hosts/mail.cloonar.com/configuration.nix
index dbf678e..c564f61 100644
--- a/hosts/mail.cloonar.com/configuration.nix
+++ b/hosts/mail.cloonar.com/configuration.nix
@@ -39,5 +39,10 @@
     allowedTCPPorts = [ 22 80 443 ];
   };
 
+  nix.gc = {
+    automatic = true;
+    options = "--delete-older-than 60d";
+  }
+
   system.stateVersion = "22.11";
 }
diff --git a/hosts/web-01.cloonar.com/configuration.nix b/hosts/web-01.cloonar.com/configuration.nix
index 665fc14..03451b3 100644
--- a/hosts/web-01.cloonar.com/configuration.nix
+++ b/hosts/web-01.cloonar.com/configuration.nix
@@ -57,7 +57,11 @@
 
   sops.age.sshKeyPaths = [ "/etc/ssh/ssh_host_ed25519_key" ];
   sops.defaultSopsFile = ./secrets.yaml;
-  nix.gc.options = "--delete-older-than 60d";
+
+  nix.gc = {
+    automatic = true;
+    options = "--delete-older-than 60d";
+  }
 
   boot.tmp.cleanOnBoot = true;
   zramSwap.enable = true;