diff --git a/packages/types-codec/package.json b/packages/types-codec/package.json
index 59623f8afa..6a462800c5 100644
--- a/packages/types-codec/package.json
+++ b/packages/types-codec/package.json
@@ -24,7 +24,8 @@
   "main": "index.js",
   "dependencies": {
     "@babel/runtime": "^7.18.3",
-    "@polkadot/util": "^9.5.1"
+    "@polkadot/util": "^9.5.1",
+    "@polkadot/x-bigint": "^9.5.1"
   },
   "devDependencies": {
     "@polkadot/types": "8.9.2-3",
diff --git a/packages/types-codec/src/abstract/BigInt.ts b/packages/types-codec/src/abstract/BigInt.ts
new file mode 100644
index 0000000000..a18f98399f
--- /dev/null
+++ b/packages/types-codec/src/abstract/BigInt.ts
@@ -0,0 +1,16 @@
+// Copyright 2017-2022 @polkadot/types-codec authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { BigInt } from '@polkadot/x-bigint';
+
+// @ts-expect-error not extensible, we make it extensible here
+export abstract class AbstractBigInt extends BigInt {
+  // @ts-expect-error super() not required, the self magic does that
+  constructor (value: string | number | bigint | boolean) {
+    const self = Object(BigInt(value)) as typeof AbstractBigInt;
+
+    Object.setPrototypeOf(self, AbstractBigInt.prototype);
+
+    return self;
+  }
+}
diff --git a/yarn.lock b/yarn.lock
index 59c5206dec..d9743456f0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2257,6 +2257,7 @@ __metadata:
     "@polkadot/types-support": 8.9.2-3
     "@polkadot/util": ^9.5.1
     "@polkadot/util-crypto": ^9.5.1
+    "@polkadot/x-bigint": ^9.5.1
   languageName: unknown
   linkType: soft
 
@@ -2422,7 +2423,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot/x-bigint@npm:9.5.1":
+"@polkadot/x-bigint@npm:9.5.1, @polkadot/x-bigint@npm:^9.5.1":
   version: 9.5.1
   resolution: "@polkadot/x-bigint@npm:9.5.1"
   dependencies: