diff --git a/docs/bake-reference.md b/docs/bake-reference.md
index 7f7cf4d7..d5781e17 100644
--- a/docs/bake-reference.md
+++ b/docs/bake-reference.md
@@ -49,6 +49,7 @@ Complete list of valid target fields available for [HCL](#hcl-definition) and
 | Name                | Type   | Description                                                                                                                     |
 |---------------------|--------|---------------------------------------------------------------------------------------------------------------------------------|
 | `args`              | Map    | Set build-time variables (same as [`--build-arg` flag](../../engine/reference/commandline/buildx_build.md))                     |
+| `attest`            | Map    | Define attestations that should be applied to the image, see [SBOM attestations](../attestations/sbom.md) and [Provenance attestations](../attestations/slsa-provenance.md) |
 | `cache-from`        | List   | External cache sources (same as [`--cache-from` flag](../../engine/reference/commandline/buildx_build.md))                      |
 | `cache-to`          | List   | Cache export destinations (same as [`--cache-to` flag](../../engine/reference/commandline/buildx_build.md))                     |
 | `context`           | String | Set of files located in the specified path or URL                                                                               |