diff --git a/libraries/js/package-lock.json b/libraries/js/package-lock.json
index 859d466..0a54fde 100644
--- a/libraries/js/package-lock.json
+++ b/libraries/js/package-lock.json
@@ -17,7 +17,7 @@
         "@digitalcredentials/vc": "^9.0.0",
         "@polkadot/keyring": "^13.1.1",
         "@polkadot/types": "^13.2.1",
-        "@polkadot/types-codec": "^13.2.1",
+        "@polkadot/types-codec": "^15.0.2",
         "@polkadot/util": "^13.1.1",
         "@polkadot/util-crypto": "^13.1.1",
         "base-x": "^5.0.0",
@@ -4794,11 +4794,10 @@
         "node": ">=18"
       }
     },
-    "node_modules/@polkadot/types-codec": {
+    "node_modules/@polkadot/types-augment/node_modules/@polkadot/types-codec": {
       "version": "13.2.1",
       "resolved": "https://registry.npmjs.org/@polkadot/types-codec/-/types-codec-13.2.1.tgz",
       "integrity": "sha512-tFAzzS8sMYItoD5a91sFMD+rskWyv4WjSmUZaj0Y4OfLtDAiQvgO0KncdGJIB6D+zZ/T7khpgsv/CZbN3YnezA==",
-      "license": "Apache-2.0",
       "dependencies": {
         "@polkadot/util": "^13.1.1",
         "@polkadot/x-bigint": "^13.1.1",
@@ -4808,6 +4807,83 @@
         "node": ">=18"
       }
     },
+    "node_modules/@polkadot/types-codec": {
+      "version": "15.0.2",
+      "resolved": "https://registry.npmjs.org/@polkadot/types-codec/-/types-codec-15.0.2.tgz",
+      "integrity": "sha512-44Q40p1rl0t7Bl1QUamewqXNVPway9xgqByyifv6ODSGhtt+lFoarb3U4JzqRUuuK0PP57ePB0L8q81Totxeew==",
+      "dependencies": {
+        "@polkadot/util": "^13.2.3",
+        "@polkadot/x-bigint": "^13.2.3",
+        "tslib": "^2.8.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@polkadot/types-codec/node_modules/@polkadot/util": {
+      "version": "13.2.3",
+      "resolved": "https://registry.npmjs.org/@polkadot/util/-/util-13.2.3.tgz",
+      "integrity": "sha512-pioNnsig3qHXrfOKMe4Yqos8B8N3/EZUpS+WfTpWnn1VjYban/0GrTXeavPlAwggnY27b8fS6rBzQBhnVYDw8g==",
+      "dependencies": {
+        "@polkadot/x-bigint": "13.2.3",
+        "@polkadot/x-global": "13.2.3",
+        "@polkadot/x-textdecoder": "13.2.3",
+        "@polkadot/x-textencoder": "13.2.3",
+        "@types/bn.js": "^5.1.6",
+        "bn.js": "^5.2.1",
+        "tslib": "^2.8.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@polkadot/types-codec/node_modules/@polkadot/x-bigint": {
+      "version": "13.2.3",
+      "resolved": "https://registry.npmjs.org/@polkadot/x-bigint/-/x-bigint-13.2.3.tgz",
+      "integrity": "sha512-VKgEAh0LsxTd/Hg517Tt5ZU4CySjBwMpaojbkjgv3fOdg1cN7t4eFEUxpyj7mlO0cp22SzDh7nmy4TO98qhLQA==",
+      "dependencies": {
+        "@polkadot/x-global": "13.2.3",
+        "tslib": "^2.8.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@polkadot/types-codec/node_modules/@polkadot/x-global": {
+      "version": "13.2.3",
+      "resolved": "https://registry.npmjs.org/@polkadot/x-global/-/x-global-13.2.3.tgz",
+      "integrity": "sha512-7MYQIAEwBkRcNrgqac5PbB0kNPlI6ISJEy6/Nb+crj8BFjQ8rf11PF49fq0QsvDeuYM1aNLigrvYZNptQs4lbw==",
+      "dependencies": {
+        "tslib": "^2.8.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@polkadot/types-codec/node_modules/@polkadot/x-textdecoder": {
+      "version": "13.2.3",
+      "resolved": "https://registry.npmjs.org/@polkadot/x-textdecoder/-/x-textdecoder-13.2.3.tgz",
+      "integrity": "sha512-i8hRXPtGknmdm3FYv6/94I52VXHJZa5sgYNw1+Hqb4Jqmq4awUjea35CKXd/+aw70Qn8Ngg31l2GoiH494fa+Q==",
+      "dependencies": {
+        "@polkadot/x-global": "13.2.3",
+        "tslib": "^2.8.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@polkadot/types-codec/node_modules/@polkadot/x-textencoder": {
+      "version": "13.2.3",
+      "resolved": "https://registry.npmjs.org/@polkadot/x-textencoder/-/x-textencoder-13.2.3.tgz",
+      "integrity": "sha512-wJI3Bb/dC4zyBXJFm5+ZhyBXWoI5wvP8k8qX0/ZC0PQsgSAqs7LVhiofk4Wd94n0P41W5re58LrGXLyziSAshw==",
+      "dependencies": {
+        "@polkadot/x-global": "13.2.3",
+        "tslib": "^2.8.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@polkadot/types-create": {
       "version": "13.2.1",
       "resolved": "https://registry.npmjs.org/@polkadot/types-create/-/types-create-13.2.1.tgz",
@@ -4822,6 +4898,32 @@
         "node": ">=18"
       }
     },
+    "node_modules/@polkadot/types-create/node_modules/@polkadot/types-codec": {
+      "version": "13.2.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/types-codec/-/types-codec-13.2.1.tgz",
+      "integrity": "sha512-tFAzzS8sMYItoD5a91sFMD+rskWyv4WjSmUZaj0Y4OfLtDAiQvgO0KncdGJIB6D+zZ/T7khpgsv/CZbN3YnezA==",
+      "dependencies": {
+        "@polkadot/util": "^13.1.1",
+        "@polkadot/x-bigint": "^13.1.1",
+        "tslib": "^2.7.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@polkadot/types/node_modules/@polkadot/types-codec": {
+      "version": "13.2.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/types-codec/-/types-codec-13.2.1.tgz",
+      "integrity": "sha512-tFAzzS8sMYItoD5a91sFMD+rskWyv4WjSmUZaj0Y4OfLtDAiQvgO0KncdGJIB6D+zZ/T7khpgsv/CZbN3YnezA==",
+      "dependencies": {
+        "@polkadot/util": "^13.1.1",
+        "@polkadot/x-bigint": "^13.1.1",
+        "tslib": "^2.7.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@polkadot/util": {
       "version": "13.1.1",
       "resolved": "https://registry.npmjs.org/@polkadot/util/-/util-13.1.1.tgz",
@@ -6625,10 +6727,9 @@
       "license": "Apache-2.0"
     },
     "node_modules/@types/bn.js": {
-      "version": "5.1.5",
-      "resolved": "https://registry.npmjs.org/@types/bn.js/-/bn.js-5.1.5.tgz",
-      "integrity": "sha512-V46N0zwKRF5Q00AZ6hWtN0T8gGmDUaUzLWQvHFo5yThtVwK/VCenFY3wXVbOvNfajEpsTfQM4IN9k/d6gUVX3A==",
-      "license": "MIT",
+      "version": "5.1.6",
+      "resolved": "https://registry.npmjs.org/@types/bn.js/-/bn.js-5.1.6.tgz",
+      "integrity": "sha512-Xh8vSwUeMKeYYrj3cX4lGQgFSF/N03r+tv4AiLl1SucqV+uTQpxRcnM8AkXKHwYP9ZPXOYXRr2KPXpVlIvqh9w==",
       "dependencies": {
         "@types/node": "*"
       }
@@ -17913,10 +18014,9 @@
       "license": "Apache-2.0"
     },
     "node_modules/tslib": {
-      "version": "2.7.0",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.7.0.tgz",
-      "integrity": "sha512-gLXCKdN1/j47AiHiOkJN69hJmcbGTHI0ImLmbYLHykhgeN0jVGola9yVjFgzCUklsZQMW55o+dW7IXv3RCXDzA==",
-      "license": "0BSD"
+      "version": "2.8.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
+      "integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w=="
     },
     "node_modules/tsup": {
       "version": "8.3.0",
diff --git a/libraries/js/package.json b/libraries/js/package.json
index 040da55..3066139 100644
--- a/libraries/js/package.json
+++ b/libraries/js/package.json
@@ -50,7 +50,7 @@
     "@digitalcredentials/vc": "^9.0.0",
     "@polkadot/keyring": "^13.1.1",
     "@polkadot/types": "^13.2.1",
-    "@polkadot/types-codec": "^13.2.1",
+    "@polkadot/types-codec": "^15.0.2",
     "@polkadot/util": "^13.1.1",
     "@polkadot/util-crypto": "^13.1.1",
     "base-x": "^5.0.0",