diff --git a/src/libs/Instill/Generated/Instill.IObjectClient.GetObjectDownloadURL.g.cs b/src/libs/Instill/Generated/Instill.IObjectClient.GetObjectDownloadURL.g.cs
index 31e2fc5..e9a5c59 100644
--- a/src/libs/Instill/Generated/Instill.IObjectClient.GetObjectDownloadURL.g.cs
+++ b/src/libs/Instill/Generated/Instill.IObjectClient.GetObjectDownloadURL.g.cs
@@ -10,14 +10,14 @@ public partial interface IObjectClient
         /// <param name="namespaceId"></param>
         /// <param name="objectUid"></param>
         /// <param name="objectName"></param>
-        /// <param name="expirationTime"></param>
+        /// <param name="urlExpireDays"></param>
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         global::System.Threading.Tasks.Task<global::Instill.GetObjectDownloadURLResponse> GetObjectDownloadURLAsync(
             string namespaceId,
             string? objectUid = default,
             string? objectName = default,
-            int? expirationTime = default,
+            int? urlExpireDays = default,
             global::System.Threading.CancellationToken cancellationToken = default);
     }
 }
\ No newline at end of file
diff --git a/src/libs/Instill/Generated/Instill.IObjectClient.GetObjectUploadURL.g.cs b/src/libs/Instill/Generated/Instill.IObjectClient.GetObjectUploadURL.g.cs
index 7d4d718..51bc615 100644
--- a/src/libs/Instill/Generated/Instill.IObjectClient.GetObjectUploadURL.g.cs
+++ b/src/libs/Instill/Generated/Instill.IObjectClient.GetObjectUploadURL.g.cs
@@ -9,7 +9,7 @@ public partial interface IObjectClient
         /// </summary>
         /// <param name="namespaceId"></param>
         /// <param name="objectName"></param>
-        /// <param name="expirationTime"></param>
+        /// <param name="urlExpireDays"></param>
         /// <param name="lastModifiedTime"></param>
         /// <param name="objectExpireDays"></param>
         /// <param name="cancellationToken">The token to cancel the operation with</param>
@@ -17,7 +17,7 @@ public partial interface IObjectClient
         global::System.Threading.Tasks.Task<global::Instill.GetObjectUploadURLResponse> GetObjectUploadURLAsync(
             string namespaceId,
             string objectName,
-            int? expirationTime = default,
+            int? urlExpireDays = default,
             global::System.DateTime? lastModifiedTime = default,
             int? objectExpireDays = default,
             global::System.Threading.CancellationToken cancellationToken = default);
diff --git a/src/libs/Instill/Generated/Instill.Models.Object.g.cs b/src/libs/Instill/Generated/Instill.Models.Object.g.cs
index f2d5ace..d01f9e7 100644
--- a/src/libs/Instill/Generated/Instill.Models.Object.g.cs
+++ b/src/libs/Instill/Generated/Instill.Models.Object.g.cs
@@ -62,6 +62,12 @@ public sealed partial class Object
         [global::System.Text.Json.Serialization.JsonPropertyName("objectExpireDays")]
         public int? ObjectExpireDays { get; set; }
 
+        /// <summary>
+        /// 
+        /// </summary>
+        [global::System.Text.Json.Serialization.JsonPropertyName("lastModifiedTime")]
+        public global::System.DateTime? LastModifiedTime { get; set; }
+
         /// <summary>
         /// 
         /// </summary>
diff --git a/src/libs/Instill/Generated/Instill.ObjectClient.GetObjectDownloadURL.g.cs b/src/libs/Instill/Generated/Instill.ObjectClient.GetObjectDownloadURL.g.cs
index 52d3908..51c2b7d 100644
--- a/src/libs/Instill/Generated/Instill.ObjectClient.GetObjectDownloadURL.g.cs
+++ b/src/libs/Instill/Generated/Instill.ObjectClient.GetObjectDownloadURL.g.cs
@@ -10,14 +10,14 @@ partial void PrepareGetObjectDownloadURLArguments(
             ref string namespaceId,
             ref string? objectUid,
             ref string? objectName,
-            ref int? expirationTime);
+            ref int? urlExpireDays);
         partial void PrepareGetObjectDownloadURLRequest(
             global::System.Net.Http.HttpClient httpClient,
             global::System.Net.Http.HttpRequestMessage httpRequestMessage,
             string namespaceId,
             string? objectUid,
             string? objectName,
-            int? expirationTime);
+            int? urlExpireDays);
         partial void ProcessGetObjectDownloadURLResponse(
             global::System.Net.Http.HttpClient httpClient,
             global::System.Net.Http.HttpResponseMessage httpResponseMessage);
@@ -33,14 +33,14 @@ partial void ProcessGetObjectDownloadURLResponseContent(
         /// <param name="namespaceId"></param>
         /// <param name="objectUid"></param>
         /// <param name="objectName"></param>
-        /// <param name="expirationTime"></param>
+        /// <param name="urlExpireDays"></param>
         /// <param name="cancellationToken">The token to cancel the operation with</param>
         /// <exception cref="global::System.InvalidOperationException"></exception>
         public async global::System.Threading.Tasks.Task<global::Instill.GetObjectDownloadURLResponse> GetObjectDownloadURLAsync(
             string namespaceId,
             string? objectUid = default,
             string? objectName = default,
-            int? expirationTime = default,
+            int? urlExpireDays = default,
             global::System.Threading.CancellationToken cancellationToken = default)
         {
             PrepareArguments(
@@ -50,7 +50,7 @@ partial void ProcessGetObjectDownloadURLResponseContent(
                 namespaceId: ref namespaceId,
                 objectUid: ref objectUid,
                 objectName: ref objectName,
-                expirationTime: ref expirationTime);
+                urlExpireDays: ref urlExpireDays);
 
             var __pathBuilder = new PathBuilder(
                 path: $"/v1alpha/namespaces/{namespaceId}/object-download-url",
@@ -58,7 +58,7 @@ partial void ProcessGetObjectDownloadURLResponseContent(
             __pathBuilder 
                 .AddOptionalParameter("objectUid", objectUid) 
                 .AddOptionalParameter("objectName", objectName) 
-                .AddOptionalParameter("expirationTime", expirationTime?.ToString()) 
+                .AddOptionalParameter("urlExpireDays", urlExpireDays?.ToString()) 
                 ; 
             var __path = __pathBuilder.ToString();
             using var httpRequest = new global::System.Net.Http.HttpRequestMessage(
@@ -90,7 +90,7 @@ partial void ProcessGetObjectDownloadURLResponseContent(
                 namespaceId: namespaceId,
                 objectUid: objectUid,
                 objectName: objectName,
-                expirationTime: expirationTime);
+                urlExpireDays: urlExpireDays);
 
             using var response = await _httpClient.SendAsync(
                 request: httpRequest,
diff --git a/src/libs/Instill/Generated/Instill.ObjectClient.GetObjectUploadURL.g.cs b/src/libs/Instill/Generated/Instill.ObjectClient.GetObjectUploadURL.g.cs
index f599e94..7e798d9 100644
--- a/src/libs/Instill/Generated/Instill.ObjectClient.GetObjectUploadURL.g.cs
+++ b/src/libs/Instill/Generated/Instill.ObjectClient.GetObjectUploadURL.g.cs
@@ -9,7 +9,7 @@ partial void PrepareGetObjectUploadURLArguments(
             global::System.Net.Http.HttpClient httpClient,
             ref string namespaceId,
             ref string objectName,
-            ref int? expirationTime,
+            ref int? urlExpireDays,
             ref global::System.DateTime? lastModifiedTime,
             ref int? objectExpireDays);
         partial void PrepareGetObjectUploadURLRequest(
@@ -17,7 +17,7 @@ partial void PrepareGetObjectUploadURLRequest(
             global::System.Net.Http.HttpRequestMessage httpRequestMessage,
             string namespaceId,
             string objectName,
-            int? expirationTime,
+            int? urlExpireDays,
             global::System.DateTime? lastModifiedTime,
             int? objectExpireDays);
         partial void ProcessGetObjectUploadURLResponse(
@@ -34,7 +34,7 @@ partial void ProcessGetObjectUploadURLResponseContent(
         /// </summary>
         /// <param name="namespaceId"></param>
         /// <param name="objectName"></param>
-        /// <param name="expirationTime"></param>
+        /// <param name="urlExpireDays"></param>
         /// <param name="lastModifiedTime"></param>
         /// <param name="objectExpireDays"></param>
         /// <param name="cancellationToken">The token to cancel the operation with</param>
@@ -42,7 +42,7 @@ partial void ProcessGetObjectUploadURLResponseContent(
         public async global::System.Threading.Tasks.Task<global::Instill.GetObjectUploadURLResponse> GetObjectUploadURLAsync(
             string namespaceId,
             string objectName,
-            int? expirationTime = default,
+            int? urlExpireDays = default,
             global::System.DateTime? lastModifiedTime = default,
             int? objectExpireDays = default,
             global::System.Threading.CancellationToken cancellationToken = default)
@@ -53,7 +53,7 @@ partial void ProcessGetObjectUploadURLResponseContent(
                 httpClient: _httpClient,
                 namespaceId: ref namespaceId,
                 objectName: ref objectName,
-                expirationTime: ref expirationTime,
+                urlExpireDays: ref urlExpireDays,
                 lastModifiedTime: ref lastModifiedTime,
                 objectExpireDays: ref objectExpireDays);
 
@@ -62,7 +62,7 @@ partial void ProcessGetObjectUploadURLResponseContent(
                 baseUri: _httpClient.BaseAddress); 
             __pathBuilder 
                 .AddRequiredParameter("objectName", objectName) 
-                .AddOptionalParameter("expirationTime", expirationTime?.ToString()) 
+                .AddOptionalParameter("urlExpireDays", urlExpireDays?.ToString()) 
                 .AddOptionalParameter("lastModifiedTime", lastModifiedTime?.ToString("yyyy-MM-ddTHH:mm:ssZ")) 
                 .AddOptionalParameter("objectExpireDays", objectExpireDays?.ToString()) 
                 ; 
@@ -95,7 +95,7 @@ partial void ProcessGetObjectUploadURLResponseContent(
                 httpRequestMessage: httpRequest,
                 namespaceId: namespaceId,
                 objectName: objectName,
-                expirationTime: expirationTime,
+                urlExpireDays: urlExpireDays,
                 lastModifiedTime: lastModifiedTime,
                 objectExpireDays: objectExpireDays);
 
diff --git a/src/libs/Instill/openapi.yaml b/src/libs/Instill/openapi.yaml
index dc0041f..b680c00 100644
--- a/src/libs/Instill/openapi.yaml
+++ b/src/libs/Instill/openapi.yaml
@@ -1719,21 +1719,21 @@ paths:
           required: true
           schema:
             type: string
-        - name: expirationTime
+        - name: urlExpireDays
           in: query
-          description: "expiration time in minutes for the URL with a default value of 1440 minutes (1 day).\nminimum is 60 minutes (1 hour) and maximum is 20160 minutes (14 days)"
+          description: "Expiration time in days for the URL.\nMinimum is 1 day and maximum is 7 days. If not set or set to 0, defaults to 1 day."
           schema:
             type: integer
             format: int32
         - name: lastModifiedTime
           in: query
-          description: last modified time this value is provided by the client when the object url is created
+          description: "last modified time this value is provided by the client when the object url is created\nit must be in RFC3339 formatted date-time string"
           schema:
             type: string
             format: date-time
         - name: objectExpireDays
           in: query
-          description: "object live time in days\nminimum is 1 day. if not set, the object will not be deleted automatically"
+          description: "object live time in days\nminimum is 1 day. if set to 0, the object will not be deleted automatically"
           schema:
             type: integer
             format: int32
@@ -1778,9 +1778,9 @@ paths:
           description: "object name\nif provided, object uid is not required"
           schema:
             type: string
-        - name: expirationTime
+        - name: urlExpireDays
           in: query
-          description: "expiration time in minutes for url with default value to 1440 minutes (1 day).\nminimum is 60 minutes (1 hour) and maximum is 20160 minutes (14 days)"
+          description: "Expiration time in days for the URL.\nMinimum is 1 day and maximum is 7 days. If not set or set to 0, defaults to 1 day."
           schema:
             type: integer
             format: int32
@@ -3411,7 +3411,7 @@ components:
           type: string
           format: int64
         contentType:
-          title: "content type\nthis is from content-type header of http request"
+          title: "content type\nthis is mime type from content-type header of http request or from file extension"
           type: string
         namespaceUid:
           title: namespace uid
@@ -3426,9 +3426,13 @@ components:
           title: object path(optional)
           type: string
         objectExpireDays:
-          title: "object live time in days\nminimum is 1 day. if not set, the object will not be deleted automatically"
+          title: "object live time in days\nif set to 0, the object will not be deleted automatically"
           type: integer
           format: int32
+        lastModifiedTime:
+          title: last modified time
+          type: string
+          format: date-time
         createdTime:
           title: created time
           type: string