diff --git a/audits/README.md b/audits/README.md
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--- a/audits/README.md
+++ b/audits/README.md
@@ -8,4 +8,6 @@ Audits of the formerly shared OP Stack components can be found in [Optimism’s
 | 03/19/26 | [Cantina](https://cantina.xyz/portfolio/423a9f33-b710-4445-a125-950b0a7771d7) | TEE Multiproof Contracts | [Report](./cantina_coinbase_nitro_enclave_mar2026.pdf) | [2421afdd332a98e9b45c6caf0a2e26b896b17e0d](https://github.com/base/contracts/tree/2421afdd332a98e9b45c6caf0a2e26b896b17e0d)  |
 | 04/10/26 | [Cantina](https://cantina.xyz/portfolio/a4f952cf-1c5b-4e3c-8153-c3adff899613) | TEE Multiproof Contracts 2 | [Report](./cantina_coinbase_nitro_enclave_apr2026.pdf) | [fe2af8cbffefa44bbb1a3917507f8bd8ebec7a2](https://github.com/base/contracts/tree/ffe2af8cbffefa44bbb1a3917507f8bd8ebec7a2)  |
 | 04/10/26 | [Cantina](https://cantina.xyz/portfolio/b72c7078-f6da-4074-a3bd-4f938f469fb7) | AggregateVerifier Multiproof Contracts 2 | [Report](./cantina_coinbase_aggregateverifier_apr2026.pdf) | [ffe2af8cbffefa44bbb1a3917507f8bd8ebec7a2](https://github.com/base/contracts/tree/ffe2af8cbffefa44bbb1a3917507f8bd8ebec7a2)  |
-| 06/04/26 | [Cantina](https://cantina.xyz/portfolio/6ce647dc-3b2c-448c-9421-426087341ce8) | Proof Contracts Update | [Report](./cantina_coinbase_proof_contracts_update_jun2026.pdf) | [e225648a7ed538e7e28c041d44f3b7a606ba7743](https://github.com/base/contracts/tree/e225648a7ed538e7e28c041d44f3b7a606ba7743)  |
\ No newline at end of file
+| 06/04/26 | [Cantina](https://cantina.xyz/portfolio/6ce647dc-3b2c-448c-9421-426087341ce8) | Proof Contracts Update | [Report](./cantina_coinbase_proof_contracts_update_jun2026.pdf) | [e225648a7ed538e7e28c041d44f3b7a606ba7743](https://github.com/base/contracts/tree/e225648a7ed538e7e28c041d44f3b7a606ba7743)  |
+| 09/02/26 | [Cantina](https://cantina.xyz) | Cobalt Contracts (v8.3.0, excluding Dynamic Upgrades) | [Report](./cantina_coinbase_cobalt_sep2026.pdf) | [385f21a41f277d287db92fffe88dca41299162ea](https://github.com/base/contracts/tree/385f21a41f277d287db92fffe88dca41299162ea)  |
+| 09/19/26 | [Cantina](https://cantina.xyz) | Dynamic Upgrades Contracts | [Report](./cantina_coinbase_dynamic_upgrades_sep2026.pdf) | [4f7acda51dba4165361b292ae08c119f5bfa1f0d](https://github.com/base/contracts/tree/4f7acda51dba4165361b292ae08c119f5bfa1f0d)  |
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