diff --git a/elasticsearch/_async/client/indices.py b/elasticsearch/_async/client/indices.py
index 87796d733..071f94ad4 100644
--- a/elasticsearch/_async/client/indices.py
+++ b/elasticsearch/_async/client/indices.py
@@ -1463,7 +1463,6 @@ async def disk_usage(
     @_rewrite_parameters(
         body_name="config",
     )
-    @_availability_warning(Stability.EXPERIMENTAL)
     async def downsample(
         self,
         *,
diff --git a/elasticsearch/_async/client/shutdown.py b/elasticsearch/_async/client/shutdown.py
index 8f75debe5..2d764ca2b 100644
--- a/elasticsearch/_async/client/shutdown.py
+++ b/elasticsearch/_async/client/shutdown.py
@@ -211,9 +211,10 @@ async def put_node(
         :param allocation_delay: Only valid if type is restart. Controls how long Elasticsearch
             will wait for the node to restart and join the cluster before reassigning
             its shards to other nodes. This works the same as delaying allocation with
-            the index.unassigned.node_left.delayed_timeout setting. If you specify both
-            a restart allocation delay and an index-level allocation delay, the longer
-            of the two is used.
+            the index.unassigned.node_left.delayed_timeout setting. If you don't specify
+            a restart allocation delay, a default value of 5 minutes will be used. If
+            both a restart allocation delay and an index-level allocation delay are configured,
+            the longer of the two is used.
         :param master_timeout: The period to wait for a connection to the master node.
             If no response is received before the timeout expires, the request fails
             and returns an error.
diff --git a/elasticsearch/_sync/client/indices.py b/elasticsearch/_sync/client/indices.py
index 103805711..86f5542fb 100644
--- a/elasticsearch/_sync/client/indices.py
+++ b/elasticsearch/_sync/client/indices.py
@@ -1463,7 +1463,6 @@ def disk_usage(
     @_rewrite_parameters(
         body_name="config",
     )
-    @_availability_warning(Stability.EXPERIMENTAL)
     def downsample(
         self,
         *,
diff --git a/elasticsearch/_sync/client/shutdown.py b/elasticsearch/_sync/client/shutdown.py
index 1c7efa86a..0176736c8 100644
--- a/elasticsearch/_sync/client/shutdown.py
+++ b/elasticsearch/_sync/client/shutdown.py
@@ -211,9 +211,10 @@ def put_node(
         :param allocation_delay: Only valid if type is restart. Controls how long Elasticsearch
             will wait for the node to restart and join the cluster before reassigning
             its shards to other nodes. This works the same as delaying allocation with
-            the index.unassigned.node_left.delayed_timeout setting. If you specify both
-            a restart allocation delay and an index-level allocation delay, the longer
-            of the two is used.
+            the index.unassigned.node_left.delayed_timeout setting. If you don't specify
+            a restart allocation delay, a default value of 5 minutes will be used. If
+            both a restart allocation delay and an index-level allocation delay are configured,
+            the longer of the two is used.
         :param master_timeout: The period to wait for a connection to the master node.
             If no response is received before the timeout expires, the request fails
             and returns an error.
diff --git a/elasticsearch/_version.py b/elasticsearch/_version.py
index 61fe3047a..783826092 100644
--- a/elasticsearch/_version.py
+++ b/elasticsearch/_version.py
@@ -16,5 +16,5 @@
 #  under the License.
 
 __versionstr__ = "9.4.0"
-__es_specification_commit__ = "fcf537e4be958d56e9c7cafe9076afdc8a91ffc1"
+__es_specification_commit__ = "945f114d4a3628aef3dd2f038af5fd82ebd5bdc5"
 _SERVERLESS_API_VERSION = "2023-10-31"