diff --git a/package.json b/package.json
index 4e283017..5fedfd72 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
   "scripts": {
     "build": "yarn build:wasm",
     "build:release": "polkadot-ci-ghact-build",
+    "build:rollup": "polkadot-exec-rollup --config",
     "build:wasm": "./scripts/build.sh",
     "lint": "polkadot-dev-run-lint",
     "clean": "./scripts/clean.sh",
diff --git a/packages/wasm-crypto/src/bundle.ts b/packages/wasm-crypto/src/bundle.ts
new file mode 100644
index 00000000..33347ef4
--- /dev/null
+++ b/packages/wasm-crypto/src/bundle.ts
@@ -0,0 +1,257 @@
+// Copyright 2019-2021 @polkadot/wasm-crypto authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { asmJsInit } from '@polkadot/wasm-crypto-asmjs';
+import { wasmBytes } from '@polkadot/wasm-crypto-wasm';
+
+import { allocString, allocU8a, getWasm, initWasm, resultString, resultU8a, withWasm } from './bridge';
+import * as imports from './imports';
+
+export { packageInfo } from './packageInfo';
+
+const wasmPromise = initWasm(wasmBytes, asmJsInit, imports).catch(() => null);
+
+export const bip39Generate = withWasm((wasm) =>
+  (words: 12 | 15 | 18 | 21 | 24): string => {
+    wasm.ext_bip39_generate(8, words);
+
+    return resultString();
+  }
+);
+
+export const bip39ToEntropy = withWasm((wasm) =>
+  (phrase: string): Uint8Array => {
+    const [ptr0, len0] = allocString(phrase);
+
+    wasm.ext_bip39_to_entropy(8, ptr0, len0);
+
+    return resultU8a();
+  }
+);
+
+export const bip39ToMiniSecret = withWasm((wasm) =>
+  (phrase: string, password: string): Uint8Array => {
+    const [ptr0, len0] = allocString(phrase);
+    const [ptr1, len1] = allocString(password);
+
+    wasm.ext_bip39_to_mini_secret(8, ptr0, len0, ptr1, len1);
+
+    return resultU8a();
+  }
+);
+
+export const bip39ToSeed = withWasm((wasm) =>
+  (phrase: string, password: string): Uint8Array => {
+    const [ptr0, len0] = allocString(phrase);
+    const [ptr1, len1] = allocString(password);
+
+    wasm.ext_bip39_to_seed(8, ptr0, len0, ptr1, len1);
+
+    return resultU8a();
+  }
+);
+
+export const bip39Validate = withWasm((wasm) =>
+  (phrase: string): boolean => {
+    const [ptr0, len0] = allocString(phrase);
+    const ret = wasm.ext_bip39_validate(ptr0, len0);
+
+    return ret !== 0;
+  }
+);
+
+export const ed25519KeypairFromSeed = withWasm((wasm) =>
+  (seed: Uint8Array): Uint8Array => {
+    const [ptr0, len0] = allocU8a(seed);
+
+    wasm.ext_ed_from_seed(8, ptr0, len0);
+
+    return resultU8a();
+  }
+);
+
+export const ed25519Sign = withWasm((wasm) =>
+  (pubkey: Uint8Array, seckey: Uint8Array, message: Uint8Array): Uint8Array => {
+    const [ptr0, len0] = allocU8a(pubkey);
+    const [ptr1, len1] = allocU8a(seckey);
+    const [ptr2, len2] = allocU8a(message);
+
+    wasm.ext_ed_sign(8, ptr0, len0, ptr1, len1, ptr2, len2);
+
+    return resultU8a();
+  }
+);
+
+export const ed25519Verify = withWasm((wasm) =>
+  (signature: Uint8Array, message: Uint8Array, pubkey: Uint8Array): boolean => {
+    const [ptr0, len0] = allocU8a(signature);
+    const [ptr1, len1] = allocU8a(message);
+    const [ptr2, len2] = allocU8a(pubkey);
+    const ret = wasm.ext_ed_verify(ptr0, len0, ptr1, len1, ptr2, len2);
+
+    return ret !== 0;
+  }
+);
+
+export const sr25519DeriveKeypairHard = withWasm((wasm) =>
+  (pair: Uint8Array, cc: Uint8Array): Uint8Array => {
+    const [ptr0, len0] = allocU8a(pair);
+    const [ptr1, len1] = allocU8a(cc);
+
+    wasm.ext_sr_derive_keypair_hard(8, ptr0, len0, ptr1, len1);
+
+    return resultU8a();
+  }
+);
+
+export const sr25519DeriveKeypairSoft = withWasm((wasm) =>
+  (pair: Uint8Array, cc: Uint8Array): Uint8Array => {
+    const [ptr0, len0] = allocU8a(pair);
+    const [ptr1, len1] = allocU8a(cc);
+
+    wasm.ext_sr_derive_keypair_soft(8, ptr0, len0, ptr1, len1);
+
+    return resultU8a();
+  }
+);
+
+export const sr25519DerivePublicSoft = withWasm((wasm) =>
+  (pubkey: Uint8Array, cc: Uint8Array): Uint8Array => {
+    const [ptr0, len0] = allocU8a(pubkey);
+    const [ptr1, len1] = allocU8a(cc);
+
+    wasm.ext_sr_derive_public_soft(8, ptr0, len0, ptr1, len1);
+
+    return resultU8a();
+  }
+);
+
+export const sr25519KeypairFromSeed = withWasm((wasm) =>
+  (seed: Uint8Array): Uint8Array => {
+    const [ptr0, len0] = allocU8a(seed);
+
+    wasm.ext_sr_from_seed(8, ptr0, len0);
+
+    return resultU8a();
+  }
+);
+
+export const sr25519Sign = withWasm((wasm) =>
+  (pubkey: Uint8Array, secret: Uint8Array, message: Uint8Array): Uint8Array => {
+    const [ptr0, len0] = allocU8a(pubkey);
+    const [ptr1, len1] = allocU8a(secret);
+    const [ptr2, len2] = allocU8a(message);
+
+    wasm.ext_sr_sign(8, ptr0, len0, ptr1, len1, ptr2, len2);
+
+    return resultU8a();
+  }
+);
+
+export const sr25519Verify = withWasm((wasm) =>
+  (signature: Uint8Array, message: Uint8Array, pubkey: Uint8Array): boolean => {
+    const [ptr0, len0] = allocU8a(signature);
+    const [ptr1, len1] = allocU8a(message);
+    const [ptr2, len2] = allocU8a(pubkey);
+    const ret = wasm.ext_sr_verify(ptr0, len0, ptr1, len1, ptr2, len2);
+
+    return ret !== 0;
+  }
+);
+
+export const vrfSign = withWasm((wasm) =>
+  (secret: Uint8Array, context: Uint8Array, message: Uint8Array, extra: Uint8Array): Uint8Array => {
+    const [ptr0, len0] = allocU8a(secret);
+    const [ptr1, len1] = allocU8a(context);
+    const [ptr2, len2] = allocU8a(message);
+    const [ptr3, len3] = allocU8a(extra);
+
+    wasm.ext_vrf_sign(8, ptr0, len0, ptr1, len1, ptr2, len2, ptr3, len3);
+
+    return resultU8a();
+  }
+);
+
+export const vrfVerify = withWasm((wasm) =>
+  (pubkey: Uint8Array, context: Uint8Array, message: Uint8Array, extra: Uint8Array, outAndProof: Uint8Array): boolean => {
+    const [ptr0, len0] = allocU8a(pubkey);
+    const [ptr1, len1] = allocU8a(context);
+    const [ptr2, len2] = allocU8a(message);
+    const [ptr3, len3] = allocU8a(extra);
+    const [ptr4, len4] = allocU8a(outAndProof);
+    const ret = wasm.ext_vrf_verify(ptr0, len0, ptr1, len1, ptr2, len2, ptr3, len3, ptr4, len4);
+
+    return ret !== 0;
+  }
+);
+
+export const blake2b = withWasm((wasm) =>
+  (data: Uint8Array, key: Uint8Array, size: number): Uint8Array => {
+    const [ptr0, len0] = allocU8a(data);
+    const [ptr1, len1] = allocU8a(key);
+
+    wasm.ext_blake2b(8, ptr0, len0, ptr1, len1, size);
+
+    return resultU8a();
+  }
+);
+
+export const keccak256 = withWasm((wasm) =>
+  (data: Uint8Array): Uint8Array => {
+    const [ptr0, len0] = allocU8a(data);
+
+    wasm.ext_keccak256(8, ptr0, len0);
+
+    return resultU8a();
+  }
+);
+
+export const pbkdf2 = withWasm((wasm) =>
+  (data: Uint8Array, salt: Uint8Array, rounds: number): Uint8Array => {
+    const [ptr0, len0] = allocU8a(data);
+    const [ptr1, len1] = allocU8a(salt);
+
+    wasm.ext_pbkdf2(8, ptr0, len0, ptr1, len1, rounds);
+
+    return resultU8a();
+  }
+);
+
+export const scrypt = withWasm((wasm) =>
+  (password: Uint8Array, salt: Uint8Array, log2n: number, r: number, p: number): Uint8Array => {
+    const [ptr0, len0] = allocU8a(password);
+    const [ptr1, len1] = allocU8a(salt);
+
+    wasm.ext_scrypt(8, ptr0, len0, ptr1, len1, log2n, r, p);
+
+    return resultU8a();
+  }
+);
+
+export const sha512 = withWasm((wasm) =>
+  (data: Uint8Array): Uint8Array => {
+    const [ptr0, len0] = allocU8a(data);
+
+    wasm.ext_sha512(8, ptr0, len0);
+
+    return resultU8a();
+  }
+);
+
+export const twox = withWasm((wasm) =>
+  (data: Uint8Array, rounds: number) => {
+    const [ptr0, len0] = allocU8a(data);
+
+    wasm.ext_twox(8, ptr0, len0, rounds);
+
+    return resultU8a();
+  }
+);
+
+export function isReady (): boolean {
+  return !!getWasm();
+}
+
+export function waitReady (): Promise<boolean> {
+  return wasmPromise.then(() => isReady());
+}
diff --git a/packages/wasm-crypto/src/index.ts b/packages/wasm-crypto/src/index.ts
index cbfe74ac..541f2ce3 100644
--- a/packages/wasm-crypto/src/index.ts
+++ b/packages/wasm-crypto/src/index.ts
@@ -3,257 +3,4 @@
 
 import './detectPackage';
 
-import { asmJsInit } from '@polkadot/wasm-crypto-asmjs';
-import { wasmBytes } from '@polkadot/wasm-crypto-wasm';
-
-import { allocString, allocU8a, getWasm, initWasm, resultString, resultU8a, withWasm } from './bridge';
-import * as imports from './imports';
-
-export { packageInfo } from './packageInfo';
-
-const wasmPromise = initWasm(wasmBytes, asmJsInit, imports).catch(() => null);
-
-export const bip39Generate = withWasm((wasm) =>
-  (words: 12 | 15 | 18 | 21 | 24): string => {
-    wasm.ext_bip39_generate(8, words);
-
-    return resultString();
-  }
-);
-
-export const bip39ToEntropy = withWasm((wasm) =>
-  (phrase: string): Uint8Array => {
-    const [ptr0, len0] = allocString(phrase);
-
-    wasm.ext_bip39_to_entropy(8, ptr0, len0);
-
-    return resultU8a();
-  }
-);
-
-export const bip39ToMiniSecret = withWasm((wasm) =>
-  (phrase: string, password: string): Uint8Array => {
-    const [ptr0, len0] = allocString(phrase);
-    const [ptr1, len1] = allocString(password);
-
-    wasm.ext_bip39_to_mini_secret(8, ptr0, len0, ptr1, len1);
-
-    return resultU8a();
-  }
-);
-
-export const bip39ToSeed = withWasm((wasm) =>
-  (phrase: string, password: string): Uint8Array => {
-    const [ptr0, len0] = allocString(phrase);
-    const [ptr1, len1] = allocString(password);
-
-    wasm.ext_bip39_to_seed(8, ptr0, len0, ptr1, len1);
-
-    return resultU8a();
-  }
-);
-
-export const bip39Validate = withWasm((wasm) =>
-  (phrase: string): boolean => {
-    const [ptr0, len0] = allocString(phrase);
-    const ret = wasm.ext_bip39_validate(ptr0, len0);
-
-    return ret !== 0;
-  }
-);
-
-export const ed25519KeypairFromSeed = withWasm((wasm) =>
-  (seed: Uint8Array): Uint8Array => {
-    const [ptr0, len0] = allocU8a(seed);
-
-    wasm.ext_ed_from_seed(8, ptr0, len0);
-
-    return resultU8a();
-  }
-);
-
-export const ed25519Sign = withWasm((wasm) =>
-  (pubkey: Uint8Array, seckey: Uint8Array, message: Uint8Array): Uint8Array => {
-    const [ptr0, len0] = allocU8a(pubkey);
-    const [ptr1, len1] = allocU8a(seckey);
-    const [ptr2, len2] = allocU8a(message);
-
-    wasm.ext_ed_sign(8, ptr0, len0, ptr1, len1, ptr2, len2);
-
-    return resultU8a();
-  }
-);
-
-export const ed25519Verify = withWasm((wasm) =>
-  (signature: Uint8Array, message: Uint8Array, pubkey: Uint8Array): boolean => {
-    const [ptr0, len0] = allocU8a(signature);
-    const [ptr1, len1] = allocU8a(message);
-    const [ptr2, len2] = allocU8a(pubkey);
-    const ret = wasm.ext_ed_verify(ptr0, len0, ptr1, len1, ptr2, len2);
-
-    return ret !== 0;
-  }
-);
-
-export const sr25519DeriveKeypairHard = withWasm((wasm) =>
-  (pair: Uint8Array, cc: Uint8Array): Uint8Array => {
-    const [ptr0, len0] = allocU8a(pair);
-    const [ptr1, len1] = allocU8a(cc);
-
-    wasm.ext_sr_derive_keypair_hard(8, ptr0, len0, ptr1, len1);
-
-    return resultU8a();
-  }
-);
-
-export const sr25519DeriveKeypairSoft = withWasm((wasm) =>
-  (pair: Uint8Array, cc: Uint8Array): Uint8Array => {
-    const [ptr0, len0] = allocU8a(pair);
-    const [ptr1, len1] = allocU8a(cc);
-
-    wasm.ext_sr_derive_keypair_soft(8, ptr0, len0, ptr1, len1);
-
-    return resultU8a();
-  }
-);
-
-export const sr25519DerivePublicSoft = withWasm((wasm) =>
-  (pubkey: Uint8Array, cc: Uint8Array): Uint8Array => {
-    const [ptr0, len0] = allocU8a(pubkey);
-    const [ptr1, len1] = allocU8a(cc);
-
-    wasm.ext_sr_derive_public_soft(8, ptr0, len0, ptr1, len1);
-
-    return resultU8a();
-  }
-);
-
-export const sr25519KeypairFromSeed = withWasm((wasm) =>
-  (seed: Uint8Array): Uint8Array => {
-    const [ptr0, len0] = allocU8a(seed);
-
-    wasm.ext_sr_from_seed(8, ptr0, len0);
-
-    return resultU8a();
-  }
-);
-
-export const sr25519Sign = withWasm((wasm) =>
-  (pubkey: Uint8Array, secret: Uint8Array, message: Uint8Array): Uint8Array => {
-    const [ptr0, len0] = allocU8a(pubkey);
-    const [ptr1, len1] = allocU8a(secret);
-    const [ptr2, len2] = allocU8a(message);
-
-    wasm.ext_sr_sign(8, ptr0, len0, ptr1, len1, ptr2, len2);
-
-    return resultU8a();
-  }
-);
-
-export const sr25519Verify = withWasm((wasm) =>
-  (signature: Uint8Array, message: Uint8Array, pubkey: Uint8Array): boolean => {
-    const [ptr0, len0] = allocU8a(signature);
-    const [ptr1, len1] = allocU8a(message);
-    const [ptr2, len2] = allocU8a(pubkey);
-    const ret = wasm.ext_sr_verify(ptr0, len0, ptr1, len1, ptr2, len2);
-
-    return ret !== 0;
-  }
-);
-
-export const vrfSign = withWasm((wasm) =>
-  (secret: Uint8Array, context: Uint8Array, message: Uint8Array, extra: Uint8Array): Uint8Array => {
-    const [ptr0, len0] = allocU8a(secret);
-    const [ptr1, len1] = allocU8a(context);
-    const [ptr2, len2] = allocU8a(message);
-    const [ptr3, len3] = allocU8a(extra);
-
-    wasm.ext_vrf_sign(8, ptr0, len0, ptr1, len1, ptr2, len2, ptr3, len3);
-
-    return resultU8a();
-  }
-);
-
-export const vrfVerify = withWasm((wasm) =>
-  (pubkey: Uint8Array, context: Uint8Array, message: Uint8Array, extra: Uint8Array, outAndProof: Uint8Array): boolean => {
-    const [ptr0, len0] = allocU8a(pubkey);
-    const [ptr1, len1] = allocU8a(context);
-    const [ptr2, len2] = allocU8a(message);
-    const [ptr3, len3] = allocU8a(extra);
-    const [ptr4, len4] = allocU8a(outAndProof);
-    const ret = wasm.ext_vrf_verify(ptr0, len0, ptr1, len1, ptr2, len2, ptr3, len3, ptr4, len4);
-
-    return ret !== 0;
-  }
-);
-
-export const blake2b = withWasm((wasm) =>
-  (data: Uint8Array, key: Uint8Array, size: number): Uint8Array => {
-    const [ptr0, len0] = allocU8a(data);
-    const [ptr1, len1] = allocU8a(key);
-
-    wasm.ext_blake2b(8, ptr0, len0, ptr1, len1, size);
-
-    return resultU8a();
-  }
-);
-
-export const keccak256 = withWasm((wasm) =>
-  (data: Uint8Array): Uint8Array => {
-    const [ptr0, len0] = allocU8a(data);
-
-    wasm.ext_keccak256(8, ptr0, len0);
-
-    return resultU8a();
-  }
-);
-
-export const pbkdf2 = withWasm((wasm) =>
-  (data: Uint8Array, salt: Uint8Array, rounds: number): Uint8Array => {
-    const [ptr0, len0] = allocU8a(data);
-    const [ptr1, len1] = allocU8a(salt);
-
-    wasm.ext_pbkdf2(8, ptr0, len0, ptr1, len1, rounds);
-
-    return resultU8a();
-  }
-);
-
-export const scrypt = withWasm((wasm) =>
-  (password: Uint8Array, salt: Uint8Array, log2n: number, r: number, p: number): Uint8Array => {
-    const [ptr0, len0] = allocU8a(password);
-    const [ptr1, len1] = allocU8a(salt);
-
-    wasm.ext_scrypt(8, ptr0, len0, ptr1, len1, log2n, r, p);
-
-    return resultU8a();
-  }
-);
-
-export const sha512 = withWasm((wasm) =>
-  (data: Uint8Array): Uint8Array => {
-    const [ptr0, len0] = allocU8a(data);
-
-    wasm.ext_sha512(8, ptr0, len0);
-
-    return resultU8a();
-  }
-);
-
-export const twox = withWasm((wasm) =>
-  (data: Uint8Array, rounds: number) => {
-    const [ptr0, len0] = allocU8a(data);
-
-    wasm.ext_twox(8, ptr0, len0, rounds);
-
-    return resultU8a();
-  }
-);
-
-export function isReady (): boolean {
-  return !!getWasm();
-}
-
-export function waitReady (): Promise<boolean> {
-  return wasmPromise.then(() => isReady());
-}
+export * from './bundle';
diff --git a/rollup.config.mjs b/rollup.config.mjs
new file mode 100644
index 00000000..1e5f273a
--- /dev/null
+++ b/rollup.config.mjs
@@ -0,0 +1,26 @@
+// Copyright 2019-2021 @polkadot/wasm-crypto authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { createBundle } from '@polkadot/dev/config/rollup';
+
+const pkgs = [
+  '@polkadot/wasm-crypto'
+];
+
+const external = [
+  ...pkgs,
+  '@polkadot/util'
+];
+
+const overrides = {
+  '@polkadot/wasm-crypto': {
+    entries: ['asmjs', 'wasm'].map((p) => `wasm-crypto-${p}`).map((p) => ({
+      find: `@polkadot/${p}`,
+      replacement: `../../${p}/build`
+    }))
+  }
+};
+
+export default pkgs.map((pkg) =>
+  createBundle({ external, pkg, ...(overrides[pkg] || {}) })
+);
diff --git a/scripts/build.sh b/scripts/build.sh
index 4b83ef99..42f11016 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -26,3 +26,5 @@ echo "*** wasm-crypto-wasm"
 ls -alR wasm-crypto-wasm/build
 
 cd ..
+
+yarn build:rollup