diff --git a/specification/storage/data-plane/Microsoft.BlobStorage/preview/2020-02-10/blob.json b/specification/storage/data-plane/Microsoft.BlobStorage/preview/2020-02-10/blob.json
index bfa894e437d4..e0238e86cae7 100644
--- a/specification/storage/data-plane/Microsoft.BlobStorage/preview/2020-02-10/blob.json
+++ b/specification/storage/data-plane/Microsoft.BlobStorage/preview/2020-02-10/blob.json
@@ -3184,6 +3184,12 @@
                 "x-ms-client-name": "IsSealed",
                 "type": "boolean",
                 "description": "If this blob has been sealed"
+              },
+              "x-ms-last-access-time": {
+                "x-ms-client-name": "LastAccessed",
+                "type": "string",
+                "format": "date-time-rfc1123",
+                "description": "UTC date/time value generated by the service that indicates the time at which the blob was last read or written to"
               }
             },
             "schema": {
@@ -3423,6 +3429,12 @@
                 "x-ms-client-name": "IsSealed",
                 "type": "boolean",
                 "description": "If this blob has been sealed"
+              },
+              "x-ms-last-access-time": {
+                "x-ms-client-name": "LastAccessed",
+                "type": "string",
+                "format": "date-time-rfc1123",
+                "description": "UTC date/time value generated by the service that indicates the time at which the blob was last read or written to"
               }
             },
             "schema": {
@@ -3769,6 +3781,12 @@
                 "x-ms-client-name": "RehydratePriority",
                 "description": "If an object is in rehydrate pending state then this header is returned with priority of rehydrate. Valid values are High and Standard.",
                 "type": "string"
+              },
+              "x-ms-last-access-time": {
+                "x-ms-client-name": "LastAccessed",
+                "type": "string",
+                "format": "date-time-rfc1123",
+                "description": "UTC date/time value generated by the service that indicates the time at which the blob was last read or written to"
               }
             }
           },
@@ -9672,6 +9690,11 @@
         },
         "RehydratePriority": {
           "$ref": "#/definitions/RehydratePriority"
+        },
+        "LastAccessTime": {
+          "x-ms-client-name": "LastAccessedOn",
+          "type": "string",
+          "format": "date-time-rfc1123"
         }
       }
     },