diff --git a/README.md b/README.md
index 85d2a15..0f47549 100644
--- a/README.md
+++ b/README.md
@@ -86,7 +86,7 @@ Do you have ideas to improve the FEP Process? Post your suggestions to the issue
 | [FEP-4ccd: Pending Followers Collection and Pending Following Collection](./fep/4ccd/fep-4ccd.md) | `DRAFT` | [#129](https://codeberg.org/fediverse/fep/issues/129) | 2023-06-21 | - |
 | [FEP-d36d: Sharing Content Across Federated Forums](./fep/d36d/fep-d36d.md) | `DRAFT` | [#125](https://codeberg.org/fediverse/fep/issues/125) | 2023-07-01 | - |
 | [FEP-1970: Chat Links](./fep/1970/fep-1970.md) | `DRAFT` | [#128](https://codeberg.org/fediverse/fep/issues/128) | 2023-07-04 | - |
-| [FEP-521a: Representing actor's public keys](./fep/521a/fep-521a.md) | `DRAFT` | [#130](https://codeberg.org/fediverse/fep/issues/130) | 2023-07-08 | - |
+| [FEP-521a: Representing actor's public keys](./fep/521a/fep-521a.md) | `FINAL` | [#130](https://codeberg.org/fediverse/fep/issues/130) | 2023-07-08 | 2025-06-14 |
 | [FEP-ae97: Client-side activity signing](./fep/ae97/fep-ae97.md) | `DRAFT` | [#148](https://codeberg.org/fediverse/fep/issues/148) | 2023-08-14 | - |
 | [FEP-0837: Federated Marketplace](./fep/0837/fep-0837.md) | `DRAFT` | [#147](https://codeberg.org/fediverse/fep/issues/147) | 2023-08-17 | - |
 | [FEP-67ff: FEDERATION.md](./fep/67ff/fep-67ff.md) | `FINAL` | [#157](https://codeberg.org/fediverse/fep/issues/157) | 2023-09-05 | 2024-09-22 |
diff --git a/index.json b/index.json
index fb2aae1..2e518fc 100644
--- a/index.json
+++ b/index.json
@@ -280,8 +280,9 @@
     "slug": "521a",
     "authors": "silverpill <@silverpill@mitra.social>",
     "type": "implementation",
-    "status": "DRAFT",
+    "status": "FINAL",
     "dateReceived": "2023-07-08",
+    "dateFinalized": "2025-06-14",
     "trackingIssue": "https://codeberg.org/fediverse/fep/issues/130",
     "discussionsTo": "https://socialhub.activitypub.rocks/t/fep-521a-representing-actors-public-keys/3380",
     "title": "Representing actor's public keys"