@@ -1908,12 +1908,24 @@ definitions:

       Shared:

         type: "boolean"

       Size:

+        description: |

+          Amount of disk space used by the build cache (in bytes).

         type: "integer"

       CreatedAt:

-        type: "integer"

+        description: |

+          Date and time at which the build cache was created in

+          [RFC 3339](https://www.ietf.org/rfc/rfc3339.txt) format with nano-seconds.

+        type: "string"

+        format: "dateTime"

+        example: "2016-08-18T10:44:24.496525531Z"

       LastUsedAt:

-        type: "integer"

+        description: |

+          Date and time at which the build cache was last used in

+          [RFC 3339](https://www.ietf.org/rfc/rfc3339.txt) format with nano-seconds.

+        type: "string"

+        format: "dateTime"

         x-nullable: true

+        example: "2017-08-09T07:09:37.632105588Z"

       UsageCount:

         type: "integer"