diff --git a/CHANGELOG.md b/CHANGELOG.md
index 671848e..34c9444 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,10 @@ use patch releases for compatibility fixes instead.
 
 ## Unreleased
 
+### Added
+
+- Added new `aliases` field to `Cluster` data model.
+
 ## [v1.36.3](https://github.com/allenai/beaker-py/releases/tag/v1.36.3) - 2025-07-11
 
 ### Added
diff --git a/beaker/data_model/cluster.py b/beaker/data_model/cluster.py
index f8f0315..49d7eea 100644
--- a/beaker/data_model/cluster.py
+++ b/beaker/data_model/cluster.py
@@ -29,6 +29,7 @@ class Cluster(BaseModel):
     preemptible: bool
     status: ClusterStatus
     status_message: Optional[str] = None
+    aliases: Optional[Tuple[str, ...]] = None
     node_spec: Optional[NodeResources] = None
     """
     The requested node configuration.