diff --git a/CHANGES.md b/CHANGES.md
index dc4e1fa3..bf7046ec 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -2,6 +2,9 @@
 
 This document describes the relevant changes between releases of the API model.
 
+## 0.0.363 Mar 07 2024
+- Add `NodeDrainGracePeriod` to the `NodePool` model.
+
 ## 0.0.362 Mar 06 2024
 - Changed `UserName` attribute for TokenClaimMappings to `Username`.
 
diff --git a/model/clusters_mgmt/v1/node_pool_type.model b/model/clusters_mgmt/v1/node_pool_type.model
index 7ac5f973..d5c74561 100644
--- a/model/clusters_mgmt/v1/node_pool_type.model
+++ b/model/clusters_mgmt/v1/node_pool_type.model
@@ -50,4 +50,7 @@ class NodePool {
 
     // The names of the tuning configs for this node pool.
     TuningConfigs []String
+
+    // Time to wait for a NodePool to drain when it is upgraded or replaced before it is forcibly removed.
+    NodeDrainGracePeriod Value
 }