diff --git a/src/dls.rs b/src/dls.rs
index 7dd3a95..91c0c62 100644
--- a/src/dls.rs
+++ b/src/dls.rs
@@ -171,15 +171,15 @@ pub struct ClusterConfig {
 #[serde(rename_all = "PascalCase")]
 pub struct HostConfig {
     pub name: String,
-    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(default, skip_serializing_if = "Option::is_none")]
     pub cluster_name: Option<String>,
 
     #[serde(rename = "IPs")]
     pub ips: Vec<IpAddr>,
 
-    #[serde(skip_serializing_if = "Map::is_empty")]
+    #[serde(default, skip_serializing_if = "Map::is_empty")]
     pub labels: Map<String, String>,
-    #[serde(skip_serializing_if = "Map::is_empty")]
+    #[serde(default, skip_serializing_if = "Map::is_empty")]
     pub annotations: Map<String, String>,
 
     #[serde(rename = "IPXE", skip_serializing_if = "Option::is_none")]
@@ -190,7 +190,7 @@ pub struct HostConfig {
     pub versions: Map<String, String>,
 
     pub bootstrap_config: String,
-    #[serde(skip_serializing_if = "Vec::is_empty")]
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
     pub initrd_files: Vec<crate::File>,
 
     pub config: String,