diff --git a/nix/kubernetes/roles/kubelet/default.nix b/nix/kubernetes/roles/kubelet/default.nix
index a226bc44..1227f3d4 100644
--- a/nix/kubernetes/roles/kubelet/default.nix
+++ b/nix/kubernetes/roles/kubelet/default.nix
@@ -47,6 +47,7 @@ let
       "10.197.0.10"
       "fd00:3e42:e349::10"
     ];
+    imageMaximumGCAge = "24h"; # Delete unused images after 1 day.
   };
   kubelet_config_file = (to_yaml_file "kubelet-config.yaml" kubelet_config);
 in