diff --git a/src/console/handlers/cluster.rs b/src/console/handlers/cluster.rs
index 7ac4103..a0d48dd 100755
--- a/src/console/handlers/cluster.rs
+++ b/src/console/handlers/cluster.rs
@@ -58,8 +58,8 @@ pub async fn list_nodes(Extension(claims): Extension<Claims>) -> Result<Json<Nod
                 .as_ref()
                 .map(|labels| {
                     labels
-                        .iter()
-                        .filter_map(|(k, _)| {
+                        .keys()
+                        .filter_map(|k| {
                             if k.starts_with("node-role.kubernetes.io/") {
                                 Some(k.trim_start_matches("node-role.kubernetes.io/").to_string())
                             } else {
diff --git a/src/console/handlers/topology.rs b/src/console/handlers/topology.rs
index a7c97c3..a67b413 100644
--- a/src/console/handlers/topology.rs
+++ b/src/console/handlers/topology.rs
@@ -85,8 +85,8 @@ pub async fn get_topology_overview(
                 .as_ref()
                 .map(|labels| {
                     labels
-                        .iter()
-                        .filter_map(|(k, _)| {
+                        .keys()
+                        .filter_map(|k| {
                             k.strip_prefix("node-role.kubernetes.io/")
                                 .map(|r| r.to_string())
                         })