diff --git a/codecs.json b/codecs.json
index a6f6c54..8f2b515 100644
--- a/codecs.json
+++ b/codecs.json
@@ -1252,6 +1252,27 @@
     "description": "ML-KEM 1024 public key; as specified by FIPS 203",
     "code": 4621
   },
+  "4624": {
+    "name": "mldsa-44-pub",
+    "tag": "key",
+    "status": "draft",
+    "description": "ML-DSA 44 public key; as specified by FIPS 204",
+    "code": 4624
+  },
+  "4625": {
+    "name": "mldsa-65-pub",
+    "tag": "key",
+    "status": "draft",
+    "description": "ML-DSA 65 public key; as specified by FIPS 204",
+    "code": 4625
+  },
+  "4626": {
+    "name": "mldsa-87-pub",
+    "tag": "key",
+    "status": "draft",
+    "description": "ML-DSA 87 public key; as specified by FIPS 204",
+    "code": 4626
+  },
   "4665": {
     "name": "multisig",
     "tag": "multiformat",
@@ -1385,6 +1406,48 @@
     "description": "SM2 private key",
     "code": 4880
   },
+  "4881": {
+    "name": "ed448-priv",
+    "tag": "key",
+    "status": "draft",
+    "description": "Ed448 private key",
+    "code": 4881
+  },
+  "4882": {
+    "name": "x448-priv",
+    "tag": "key",
+    "status": "draft",
+    "description": "X448 private key",
+    "code": 4882
+  },
+  "4883": {
+    "name": "mlkem-512-priv",
+    "tag": "key",
+    "status": "draft",
+    "description": "ML-KEM 512 private key; as specified by FIPS 203",
+    "code": 4883
+  },
+  "4884": {
+    "name": "mlkem-768-priv",
+    "tag": "key",
+    "status": "draft",
+    "description": "ML-KEM 768 public key; as specified by FIPS 203",
+    "code": 4884
+  },
+  "4885": {
+    "name": "mlkem-1024-priv",
+    "tag": "key",
+    "status": "draft",
+    "description": "ML-KEM 1024 public key; as specified by FIPS 203",
+    "code": 4885
+  },
+  "4886": {
+    "name": "jwk_jcs-priv",
+    "tag": "key",
+    "status": "draft",
+    "description": "JSON object containing only the required members of a JWK (RFC 7518 and RFC 7517) representing the private key. Serialisation based on JCS (RFC 8785)",
+    "code": 4886
+  },
   "6676": {
     "name": "lamport-sha3-512-pub",
     "tag": "key",
diff --git a/index.js b/index.js
index 9bc6235..a38aa5e 100644
--- a/index.js
+++ b/index.js
@@ -25,7 +25,7 @@ function decodeCID (value) {
   return {
     cid,
     multibase: cid.version === 0 ? bases.base58btc : base,
-    multicodec: codecs[cid.code],
+    multicodec: codecs[cid.code] || {name: "unknown multicodec", description: "unknown multicodec", code: cid.code},
     multihash: {
       ...cid.multihash,
       name: codecs[cid.multihash.code]?.name || 'unknown multihash'