diff --git a/package.json b/package.json
index eaf986d36f..3470d4e792 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "@babel/core": "^7.14.6",
     "@babel/register": "^7.14.5",
     "@babel/runtime": "^7.14.6",
-    "@polkadot/dev": "^0.62.54",
+    "@polkadot/dev": "^0.62.56",
     "@polkadot/ts": "^0.4.4",
     "@polkadot/typegen": "workspace:packages/typegen",
     "@types/jest": "^26.0.23",
diff --git a/packages/api-contract/package.json b/packages/api-contract/package.json
index c587510de6..b5a719e0f3 100644
--- a/packages/api-contract/package.json
+++ b/packages/api-contract/package.json
@@ -22,7 +22,7 @@
     "@babel/runtime": "^7.14.6",
     "@polkadot/api": "4.17.2-16",
     "@polkadot/types": "4.17.2-16",
-    "@polkadot/util": "^6.11.2-11",
+    "@polkadot/util": "^6.11.2-13",
     "rxjs": "^7.2.0"
   }
 }
diff --git a/packages/api-derive/package.json b/packages/api-derive/package.json
index 1f9c5fcab4..b1529a7378 100644
--- a/packages/api-derive/package.json
+++ b/packages/api-derive/package.json
@@ -23,12 +23,12 @@
     "@polkadot/api": "4.17.2-16",
     "@polkadot/rpc-core": "4.17.2-16",
     "@polkadot/types": "4.17.2-16",
-    "@polkadot/util": "^6.11.2-11",
-    "@polkadot/util-crypto": "^6.11.2-11",
+    "@polkadot/util": "^6.11.2-13",
+    "@polkadot/util-crypto": "^6.11.2-13",
     "rxjs": "^7.2.0"
   },
   "devDependencies": {
-    "@polkadot/keyring": "^6.11.2-11",
+    "@polkadot/keyring": "^6.11.2-13",
     "@polkadot/rpc-provider": "4.17.2-16"
   }
 }
diff --git a/packages/api/package.json b/packages/api/package.json
index fc41cc1226..f88e37c969 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -21,13 +21,13 @@
   "dependencies": {
     "@babel/runtime": "^7.14.6",
     "@polkadot/api-derive": "4.17.2-16",
-    "@polkadot/keyring": "^6.11.2-11",
+    "@polkadot/keyring": "^6.11.2-13",
     "@polkadot/rpc-core": "4.17.2-16",
     "@polkadot/rpc-provider": "4.17.2-16",
     "@polkadot/types": "4.17.2-16",
     "@polkadot/types-known": "4.17.2-16",
-    "@polkadot/util": "^6.11.2-11",
-    "@polkadot/util-crypto": "^6.11.2-11",
+    "@polkadot/util": "^6.11.2-13",
+    "@polkadot/util-crypto": "^6.11.2-13",
     "eventemitter3": "^4.0.7",
     "rxjs": "^7.2.0"
   }
diff --git a/packages/rpc-core/package.json b/packages/rpc-core/package.json
index 385016899e..e792fdfdc7 100644
--- a/packages/rpc-core/package.json
+++ b/packages/rpc-core/package.json
@@ -22,10 +22,10 @@
     "@babel/runtime": "^7.14.6",
     "@polkadot/rpc-provider": "4.17.2-16",
     "@polkadot/types": "4.17.2-16",
-    "@polkadot/util": "^6.11.2-11",
+    "@polkadot/util": "^6.11.2-13",
     "rxjs": "^7.2.0"
   },
   "devDependencies": {
-    "@polkadot/keyring": "^6.11.2-11"
+    "@polkadot/keyring": "^6.11.2-13"
   }
 }
diff --git a/packages/rpc-provider/package.json b/packages/rpc-provider/package.json
index 91ab81d28d..bcfff7ff9c 100644
--- a/packages/rpc-provider/package.json
+++ b/packages/rpc-provider/package.json
@@ -21,15 +21,15 @@
   "dependencies": {
     "@babel/runtime": "^7.14.6",
     "@polkadot/types": "4.17.2-16",
-    "@polkadot/util": "^6.11.2-11",
-    "@polkadot/util-crypto": "^6.11.2-11",
-    "@polkadot/x-fetch": "^6.11.2-11",
-    "@polkadot/x-global": "^6.11.2-11",
-    "@polkadot/x-ws": "^6.11.2-11",
+    "@polkadot/util": "^6.11.2-13",
+    "@polkadot/util-crypto": "^6.11.2-13",
+    "@polkadot/x-fetch": "^6.11.2-13",
+    "@polkadot/x-global": "^6.11.2-13",
+    "@polkadot/x-ws": "^6.11.2-13",
     "eventemitter3": "^4.0.7"
   },
   "devDependencies": {
-    "@polkadot/keyring": "^6.11.2-11",
+    "@polkadot/keyring": "^6.11.2-13",
     "@polkadot/types": "4.17.2-16",
     "mock-socket": "^9.0.3",
     "nock": "^13.1.1"
diff --git a/packages/typegen/package.json b/packages/typegen/package.json
index 82b33b0b55..5c73d405d9 100644
--- a/packages/typegen/package.json
+++ b/packages/typegen/package.json
@@ -32,7 +32,7 @@
     "@polkadot/api": "4.17.2-16",
     "@polkadot/rpc-provider": "4.17.2-16",
     "@polkadot/types": "4.17.2-16",
-    "@polkadot/util": "^6.11.2-11",
+    "@polkadot/util": "^6.11.2-13",
     "handlebars": "^4.7.7",
     "websocket": "^1.0.34",
     "yargs": "^17.0.1"
diff --git a/packages/types-known/package.json b/packages/types-known/package.json
index 641467f48d..cdfda3b8ae 100644
--- a/packages/types-known/package.json
+++ b/packages/types-known/package.json
@@ -20,8 +20,8 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/types-known#readme",
   "dependencies": {
     "@babel/runtime": "^7.14.6",
-    "@polkadot/networks": "^6.11.2-11",
+    "@polkadot/networks": "^6.11.2-13",
     "@polkadot/types": "4.17.2-16",
-    "@polkadot/util": "^6.11.2-11"
+    "@polkadot/util": "^6.11.2-13"
   }
 }
diff --git a/packages/types/package.json b/packages/types/package.json
index b03a83f261..e514201419 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -20,12 +20,12 @@
   "homepage": "https://github.com/polkadot-js/api/tree/master/packages/types#readme",
   "dependencies": {
     "@babel/runtime": "^7.14.6",
-    "@polkadot/util": "^6.11.2-11",
-    "@polkadot/util-crypto": "^6.11.2-11",
+    "@polkadot/util": "^6.11.2-13",
+    "@polkadot/util-crypto": "^6.11.2-13",
     "rxjs": "^7.2.0"
   },
   "devDependencies": {
-    "@polkadot/keyring": "^6.11.2-11",
+    "@polkadot/keyring": "^6.11.2-13",
     "@types/bn.js": "^4.11.6",
     "bn.js": "^4.11.9"
   }
diff --git a/rollup.config.mjs b/rollup.config.mjs
index befa686daa..a429703d14 100644
--- a/rollup.config.mjs
+++ b/rollup.config.mjs
@@ -19,10 +19,10 @@ const external = [
   '@polkadot/util-crypto'
 ];
 
-const entries = ['api-derive', 'rpc-core', 'rpc-provider', 'types-known'].map((p) => ({
-  find: `@polkadot/${p}`,
-  replacement: path.resolve(process.cwd(), `packages/${p}/build`)
-}));
+const entries = ['api-derive', 'rpc-core', 'rpc-provider', 'types-known'].reduce((all, p) => ({
+  ...all,
+  [`@polkadot/${p}`]: path.resolve(process.cwd(), `packages/${p}/build/bundle.js`)
+}), {});
 
 const overrides = {};
 
@@ -33,6 +33,9 @@ export default pkgs.map((pkg) => {
     external,
     pkg,
     ...override,
-    entries: entries.concat(...(override.entries || []))
+    entries: {
+      ...entries,
+      ...(override.entries || {})
+    }
   });
 });
diff --git a/test-bundle.html b/test-bundle.html
new file mode 100644
index 0000000000..cd508ae3be
--- /dev/null
+++ b/test-bundle.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <title></title>
+    <style></style>
+  </head>
+  <body>
+    Executing bundle tests, see the dev console for output ...
+    <script>
+      function log (label, result) {
+        label.startsWith('*')
+          ? console.log(label)
+          : console.log(label.padStart(24), '=', result);
+      }
+    </script>
+    <script src="node_modules/@polkadot/util/bundle-polkadot-util.js"></script>
+    <script src="node_modules/@polkadot/networks/bundle-polkadot-networks.js"></script>
+    <script src="node_modules/@polkadot/util-crypto/bundle-polkadot-util-crypto.js"></script>
+    <script src="node_modules/@polkadot/keyring/bundle-polkadot-keyring.js"></script>
+    <script src="packages/types/build/bundle-polkadot-types.js"></script>
+    <script>
+      log('*** polkadotTypes');
+
+      const { TypeRegistry } = polkadotTypes;
+      const registry = new TypeRegistry();
+
+      console.log('createType', registry.createType('Balance', 1234567890).toHuman());
+    </script>
+    <script src="packages/api/build/bundle-polkadot-api.js"></script>
+    <script>
+      log('*** polkadotApi');
+
+      const { ApiPromise, WsProvider } = polkadotApi;
+      const provider = new WsProvider('wss://rpc.polkadot.io');
+
+      ApiPromise
+        .create({ provider })
+        .then((api) =>
+          // use the derive version, checking that that also works
+          api.derive.chain.subscribeNewHeads((h) =>
+            log(polkadotUtil.formatNumber(h.number.unwrap()), h.hash.toHex())
+          )
+        );
+    </script>
+  </body>
+</html>
diff --git a/yarn.lock b/yarn.lock
index ea36be38a1..c3a8516f2d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1869,7 +1869,7 @@ __metadata:
     "@babel/runtime": ^7.14.6
     "@polkadot/api": 4.17.2-16
     "@polkadot/types": 4.17.2-16
-    "@polkadot/util": ^6.11.2-11
+    "@polkadot/util": ^6.11.2-13
     rxjs: ^7.2.0
   languageName: unknown
   linkType: soft
@@ -1880,12 +1880,12 @@ __metadata:
   dependencies:
     "@babel/runtime": ^7.14.6
     "@polkadot/api": 4.17.2-16
-    "@polkadot/keyring": ^6.11.2-11
+    "@polkadot/keyring": ^6.11.2-13
     "@polkadot/rpc-core": 4.17.2-16
     "@polkadot/rpc-provider": 4.17.2-16
     "@polkadot/types": 4.17.2-16
-    "@polkadot/util": ^6.11.2-11
-    "@polkadot/util-crypto": ^6.11.2-11
+    "@polkadot/util": ^6.11.2-13
+    "@polkadot/util-crypto": ^6.11.2-13
     rxjs: ^7.2.0
   languageName: unknown
   linkType: soft
@@ -1896,21 +1896,21 @@ __metadata:
   dependencies:
     "@babel/runtime": ^7.14.6
     "@polkadot/api-derive": 4.17.2-16
-    "@polkadot/keyring": ^6.11.2-11
+    "@polkadot/keyring": ^6.11.2-13
     "@polkadot/rpc-core": 4.17.2-16
     "@polkadot/rpc-provider": 4.17.2-16
     "@polkadot/types": 4.17.2-16
     "@polkadot/types-known": 4.17.2-16
-    "@polkadot/util": ^6.11.2-11
-    "@polkadot/util-crypto": ^6.11.2-11
+    "@polkadot/util": ^6.11.2-13
+    "@polkadot/util-crypto": ^6.11.2-13
     eventemitter3: ^4.0.7
     rxjs: ^7.2.0
   languageName: unknown
   linkType: soft
 
-"@polkadot/dev@npm:^0.62.54":
-  version: 0.62.54
-  resolution: "@polkadot/dev@npm:0.62.54"
+"@polkadot/dev@npm:^0.62.56":
+  version: 0.62.56
+  resolution: "@polkadot/dev@npm:0.62.56"
   dependencies:
     "@babel/cli": ^7.14.5
     "@babel/core": ^7.14.6
@@ -1998,30 +1998,30 @@ __metadata:
     polkadot-exec-rollup: scripts/polkadot-exec-rollup.cjs
     polkadot-exec-tsc: scripts/polkadot-exec-tsc.cjs
     polkadot-exec-webpack: scripts/polkadot-exec-webpack.cjs
-  checksum: fd36c929cfec2ca6adca28d0cc47c495d7404923b46e77dda403343fb652793324517868139d5d8e65f3a05a18aece2f88874f350e4d6eaf57e310a2a6e49746
+  checksum: dfd8d2a404224108d241162e352bbe4bd75af7bf29a530a280de58ac4177b4ad3b500e1b8afbb9f236e906a61f91634064543b4315f630fe9216788aa3d59cd5
   languageName: node
   linkType: hard
 
-"@polkadot/keyring@npm:^6.11.2-11":
-  version: 6.11.2-11
-  resolution: "@polkadot/keyring@npm:6.11.2-11"
+"@polkadot/keyring@npm:^6.11.2-13":
+  version: 6.11.2-13
+  resolution: "@polkadot/keyring@npm:6.11.2-13"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/util": 6.11.2-11
-    "@polkadot/util-crypto": 6.11.2-11
+    "@polkadot/util": 6.11.2-13
+    "@polkadot/util-crypto": 6.11.2-13
   peerDependencies:
-    "@polkadot/util": 6.11.2-11
-    "@polkadot/util-crypto": 6.11.2-11
-  checksum: ba12fe9af6102f8fd6d0fdf161543194ddab322fb35217cf6dc2d3fe67a16beea7f5e24356799ce7dbe042cb671b43ce25bcc1b09fe45dc8b6998a7df3c88d71
+    "@polkadot/util": 6.11.2-13
+    "@polkadot/util-crypto": 6.11.2-13
+  checksum: 865e1ec06f648a1dcb1176aad381a531be94045ac7a2174b8e23739846aa31f3dec71cdb05019d8186b2a9aa2e7c58386c868c303f99967be06fb30b7a0f4867
   languageName: node
   linkType: hard
 
-"@polkadot/networks@npm:6.11.2-11, @polkadot/networks@npm:^6.11.2-11":
-  version: 6.11.2-11
-  resolution: "@polkadot/networks@npm:6.11.2-11"
+"@polkadot/networks@npm:6.11.2-13, @polkadot/networks@npm:^6.11.2-13":
+  version: 6.11.2-13
+  resolution: "@polkadot/networks@npm:6.11.2-13"
   dependencies:
     "@babel/runtime": ^7.14.6
-  checksum: 6f26e3e519585015a04898115875ac9fd0c266eaf3c6f9a9758127129915dd38e71b13eda867dc223bb507448b5ed7b39dfca4369474a7bd2ecfd4cc828dd9dc
+  checksum: 1ed2929d71341524eb0ea946e798be57c2be3ce41f5b11fa5b6f2ab7d21f8b7c9bb9b861076e59cd3dec339f9e64203bd3930b4277a2112b1d055a1ff80b353d
   languageName: node
   linkType: hard
 
@@ -2030,10 +2030,10 @@ __metadata:
   resolution: "@polkadot/rpc-core@workspace:packages/rpc-core"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/keyring": ^6.11.2-11
+    "@polkadot/keyring": ^6.11.2-13
     "@polkadot/rpc-provider": 4.17.2-16
     "@polkadot/types": 4.17.2-16
-    "@polkadot/util": ^6.11.2-11
+    "@polkadot/util": ^6.11.2-13
     rxjs: ^7.2.0
   languageName: unknown
   linkType: soft
@@ -2043,13 +2043,13 @@ __metadata:
   resolution: "@polkadot/rpc-provider@workspace:packages/rpc-provider"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/keyring": ^6.11.2-11
+    "@polkadot/keyring": ^6.11.2-13
     "@polkadot/types": 4.17.2-16
-    "@polkadot/util": ^6.11.2-11
-    "@polkadot/util-crypto": ^6.11.2-11
-    "@polkadot/x-fetch": ^6.11.2-11
-    "@polkadot/x-global": ^6.11.2-11
-    "@polkadot/x-ws": ^6.11.2-11
+    "@polkadot/util": ^6.11.2-13
+    "@polkadot/util-crypto": ^6.11.2-13
+    "@polkadot/x-fetch": ^6.11.2-13
+    "@polkadot/x-global": ^6.11.2-13
+    "@polkadot/x-ws": ^6.11.2-13
     eventemitter3: ^4.0.7
     mock-socket: ^9.0.3
     nock: ^13.1.1
@@ -2075,7 +2075,7 @@ __metadata:
     "@polkadot/api": 4.17.2-16
     "@polkadot/rpc-provider": 4.17.2-16
     "@polkadot/types": 4.17.2-16
-    "@polkadot/util": ^6.11.2-11
+    "@polkadot/util": ^6.11.2-13
     "@types/websocket": ^1.0.3
     "@types/yargs": ^17.0.2
     handlebars: ^4.7.7
@@ -2095,9 +2095,9 @@ __metadata:
   resolution: "@polkadot/types-known@workspace:packages/types-known"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/networks": ^6.11.2-11
+    "@polkadot/networks": ^6.11.2-13
     "@polkadot/types": 4.17.2-16
-    "@polkadot/util": ^6.11.2-11
+    "@polkadot/util": ^6.11.2-13
   languageName: unknown
   linkType: soft
 
@@ -2106,24 +2106,24 @@ __metadata:
   resolution: "@polkadot/types@workspace:packages/types"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/keyring": ^6.11.2-11
-    "@polkadot/util": ^6.11.2-11
-    "@polkadot/util-crypto": ^6.11.2-11
+    "@polkadot/keyring": ^6.11.2-13
+    "@polkadot/util": ^6.11.2-13
+    "@polkadot/util-crypto": ^6.11.2-13
     "@types/bn.js": ^4.11.6
     bn.js: ^4.11.9
     rxjs: ^7.2.0
   languageName: unknown
   linkType: soft
 
-"@polkadot/util-crypto@npm:6.11.2-11, @polkadot/util-crypto@npm:^6.11.2-11":
-  version: 6.11.2-11
-  resolution: "@polkadot/util-crypto@npm:6.11.2-11"
+"@polkadot/util-crypto@npm:6.11.2-13, @polkadot/util-crypto@npm:^6.11.2-13":
+  version: 6.11.2-13
+  resolution: "@polkadot/util-crypto@npm:6.11.2-13"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/networks": 6.11.2-11
-    "@polkadot/util": 6.11.2-11
-    "@polkadot/wasm-crypto": ^4.1.1
-    "@polkadot/x-randomvalues": 6.11.2-11
+    "@polkadot/networks": 6.11.2-13
+    "@polkadot/util": 6.11.2-13
+    "@polkadot/wasm-crypto": ^4.1.2
+    "@polkadot/x-randomvalues": 6.11.2-13
     base-x: ^3.0.8
     base64-js: ^1.5.1
     blakejs: ^1.1.1
@@ -2136,118 +2136,118 @@ __metadata:
     tweetnacl: ^1.0.3
     xxhashjs: ^0.2.2
   peerDependencies:
-    "@polkadot/util": 6.11.2-11
-  checksum: 8e9d697ecf916dd1d5195f60e69ec2372cd7d07b5be2abeabfc8610b2170bd10ccca8997aadf3fe16eab97b55782acfae1d1708775b361d3608e7cb42ed12d68
+    "@polkadot/util": 6.11.2-13
+  checksum: 58085ea425a6fb3ebefd620be5e77b32e50e5bb8c0b5897cc787fa92ed4c6fec2249d4536cb7aa62bd04982bd0eff7568e96ff75acac9e7a2c3ff0a5699511db
   languageName: node
   linkType: hard
 
-"@polkadot/util@npm:6.11.2-11, @polkadot/util@npm:^6.11.2-11":
-  version: 6.11.2-11
-  resolution: "@polkadot/util@npm:6.11.2-11"
+"@polkadot/util@npm:6.11.2-13, @polkadot/util@npm:^6.11.2-13":
+  version: 6.11.2-13
+  resolution: "@polkadot/util@npm:6.11.2-13"
   dependencies:
     "@babel/runtime": ^7.14.6
-    "@polkadot/x-textdecoder": 6.11.2-11
-    "@polkadot/x-textencoder": 6.11.2-11
+    "@polkadot/x-textdecoder": 6.11.2-13
+    "@polkadot/x-textencoder": 6.11.2-13
     "@types/bn.js": ^4.11.6
     bn.js: ^4.11.9
     camelcase: ^5.3.1
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