diff --git a/libraries/js/package-lock.json b/libraries/js/package-lock.json
index 7a46a89..64aa8fb 100644
--- a/libraries/js/package-lock.json
+++ b/libraries/js/package-lock.json
@@ -17,7 +17,7 @@
         "@digitalcredentials/vc": "^9.0.1",
         "@polkadot/keyring": "^13.2.2",
         "@polkadot/types": "^14.2.2",
-        "@polkadot/types-codec": "^14.2.2",
+        "@polkadot/types-codec": "^15.0.2",
         "@polkadot/util": "^13.2.2",
         "@polkadot/util-crypto": "^13.2.2",
         "base-x": "^5.0.0",
@@ -5359,11 +5359,10 @@
         "node": ">=18"
       }
     },
-    "node_modules/@polkadot/types-codec": {
+    "node_modules/@polkadot/types-augment/node_modules/@polkadot/types-codec": {
       "version": "14.2.3",
       "resolved": "https://registry.npmjs.org/@polkadot/types-codec/-/types-codec-14.2.3.tgz",
       "integrity": "sha512-Rz2SgKIGgRNkuLfjLzvwpxeJ+b+qls8Jdtt3rXX0/KB11rdazpLvw1lt07LJnMYWDRaLC/LHStskE0ekft/kVg==",
-      "license": "Apache-2.0",
       "dependencies": {
         "@polkadot/util": "^13.2.2",
         "@polkadot/x-bigint": "^13.2.2",
@@ -5373,6 +5372,83 @@
         "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": "14.2.3",
       "resolved": "https://registry.npmjs.org/@polkadot/types-create/-/types-create-14.2.3.tgz",
@@ -5387,6 +5463,32 @@
         "node": ">=18"
       }
     },
+    "node_modules/@polkadot/types-create/node_modules/@polkadot/types-codec": {
+      "version": "14.2.3",
+      "resolved": "https://registry.npmjs.org/@polkadot/types-codec/-/types-codec-14.2.3.tgz",
+      "integrity": "sha512-Rz2SgKIGgRNkuLfjLzvwpxeJ+b+qls8Jdtt3rXX0/KB11rdazpLvw1lt07LJnMYWDRaLC/LHStskE0ekft/kVg==",
+      "dependencies": {
+        "@polkadot/util": "^13.2.2",
+        "@polkadot/x-bigint": "^13.2.2",
+        "tslib": "^2.8.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@polkadot/types/node_modules/@polkadot/types-codec": {
+      "version": "14.2.3",
+      "resolved": "https://registry.npmjs.org/@polkadot/types-codec/-/types-codec-14.2.3.tgz",
+      "integrity": "sha512-Rz2SgKIGgRNkuLfjLzvwpxeJ+b+qls8Jdtt3rXX0/KB11rdazpLvw1lt07LJnMYWDRaLC/LHStskE0ekft/kVg==",
+      "dependencies": {
+        "@polkadot/util": "^13.2.2",
+        "@polkadot/x-bigint": "^13.2.2",
+        "tslib": "^2.8.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@polkadot/util": {
       "version": "13.2.2",
       "resolved": "https://registry.npmjs.org/@polkadot/util/-/util-13.2.2.tgz",
diff --git a/libraries/js/package.json b/libraries/js/package.json
index 5adff98..7f28bf3 100644
--- a/libraries/js/package.json
+++ b/libraries/js/package.json
@@ -52,7 +52,7 @@
     "@digitalcredentials/vc": "^9.0.1",
     "@polkadot/keyring": "^13.2.2",
     "@polkadot/types": "^14.2.2",
-    "@polkadot/types-codec": "^14.2.2",
+    "@polkadot/types-codec": "^15.0.2",
     "@polkadot/util": "^13.2.2",
     "@polkadot/util-crypto": "^13.2.2",
     "base-x": "^5.0.0",