diff --git a/src/runboat/controller.py b/src/runboat/controller.py
index 01cf222..23b06ff 100644
--- a/src/runboat/controller.py
+++ b/src/runboat/controller.py
@@ -125,7 +125,7 @@ class Controller:
                 deployment.metadata.name,
                 deployment.metadata.resource_version,
                 deployment.spec.replicas,
-                deployment.status.ready_replicas,
+                deployment.status.available_replicas,
             )
             build_name = deployment.metadata.labels.get("runboat/build")
             if not build_name:
diff --git a/src/runboat/models.py b/src/runboat/models.py
index 626290d..afe8aff 100644
--- a/src/runboat/models.py
+++ b/src/runboat/models.py
@@ -112,7 +112,7 @@ class Build(BaseModel):
                 else:
                     return BuildStatus.stopped
             else:
-                if deployment.status.ready_replicas == replicas:
+                if deployment.status.available_replicas == replicas:
                     return BuildStatus.started
                 else:
                     return BuildStatus.starting