diff --git a/CHANGELOG.md b/CHANGELOG.md
index a03b6e2..07a4bde 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@
   * `HorizontalPodAutoscaler`
 * `KubeConfig` learned to handle empty or missing user configuration
 * `HTTPClient` learned to create an HTTP session with no authentication
+* ready supported on all objects if exposed by the kubernetes api
 
 ### Bug fixes
 
diff --git a/pykube/objects.py b/pykube/objects.py
index 5857578..79ee159 100644
--- a/pykube/objects.py
+++ b/pykube/objects.py
@@ -95,6 +95,15 @@ def delete(self):
         if r.status_code != 404:
             self.api.raise_for_status(r)
 
+    @property
+    def ready(self):
+        try:
+            return (
+                self.obj["status"]["observedGeneration"] >= self.obj["metadata"]["generation"]
+            )
+        except KeyError as e:
+            raise NotImplementedError(e)
+
 
 class NamespacedAPIObject(APIObject):
 
@@ -128,13 +137,6 @@ class Deployment(NamespacedAPIObject, ReplicatedMixin, ScalableMixin):
     endpoint = "deployments"
     kind = "Deployment"
 
-    @property
-    def ready(self):
-        return (
-            self.obj["status"]["observedGeneration"] >= self.obj["metadata"]["generation"] and
-            self.obj["status"]["updatedReplicas"] == self.replicas
-        )
-
 
 class Endpoint(NamespacedAPIObject):