diff --git a/package.json b/package.json
index 855e553..fe91cbd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "userop",
-  "version": "0.4.0-beta.2",
+  "version": "0.4.0-beta.3",
   "description": "A simple JS library for building ERC-4337 UserOperations.",
   "types": "./dist/index.d.ts",
   "main": "./dist/index.js",
@@ -23,17 +23,21 @@
     "@types/jest": "^29.5.12",
     "eslint": "^8.57.0",
     "eslint-config-prettier": "^9.1.0",
+    "ethers": "^6.11.1",
     "jest": "^29.7.0",
     "nock": "^13.5.4",
     "prettier": "3.2.5",
     "rimraf": "^5.0.5",
     "ts-jest": "^29.1.2",
     "typescript": "^5.4.2",
-    "typescript-eslint": "^7.3.1"
+    "typescript-eslint": "^7.3.1",
+    "viem": "^2.9.12"
   },
   "dependencies": {
-    "abitype": "^1.0.0",
+    "abitype": "^1.0.0"
+  },
+  "peerDependencies": {
     "ethers": "^6.11.1",
-    "viem": "^2.7.19"
+    "viem": "^2.9.12"
   }
 }
diff --git a/src/v06/account/commonConfigs/simpleAccount.ts b/src/v06/account/commonConfigs/simpleAccount.ts
index 538b004..d4ef996 100644
--- a/src/v06/account/commonConfigs/simpleAccount.ts
+++ b/src/v06/account/commonConfigs/simpleAccount.ts
@@ -13,31 +13,20 @@ import { RequestSignature } from "../hooks";
 
 const FACTORY_ADDRESS = "0x9406Cc6185a346906296840746125a0E44976454";
 
-type SimpleAccountArgsWithViemEOA<E extends WalletClient> = [
+export function base(
   ethClient: PublicClient | JsonRpcProvider,
-  eoa: E,
-];
-type SimpleAccountArgsWithViemEOANoHoist<E extends WalletClient> = [
-  ethClient: PublicClient | JsonRpcProvider,
-  eoa: E,
+  eoa: WalletClient<Transport, Chain | undefined, undefined>,
   account: Account,
-];
-type SimpleAccountArgsWithEthersSigner<E extends Signer> = [
+): RequiredAccountOpts<typeof AccountAbi, typeof FactoryAbi>;
+export function base(
   ethClient: PublicClient | JsonRpcProvider,
-  eoa: E,
-];
-
-export const base = <E extends WalletClient | Signer>(
-  ...args: E extends WalletClient
-    ? E["account"] extends Account
-      ? SimpleAccountArgsWithViemEOA<E>
-      : SimpleAccountArgsWithViemEOANoHoist<E>
-    : E extends Signer
-      ? SimpleAccountArgsWithEthersSigner<E>
-      : never
-): RequiredAccountOpts<typeof AccountAbi, typeof FactoryAbi> => {
-  const [ethClient, eoa, account] = args;
-
+  eoa: WalletClient<Transport, Chain | undefined, Account> | Signer,
+): RequiredAccountOpts<typeof AccountAbi, typeof FactoryAbi>;
+export function base(
+  ethClient: PublicClient | JsonRpcProvider,
+  eoa: Signer | WalletClient,
+  account?: Account,
+): RequiredAccountOpts<typeof AccountAbi, typeof FactoryAbi> {
   return {
     accountAbi: AccountAbi,
     factoryAbi: FactoryAbi,
@@ -58,10 +47,13 @@ export const base = <E extends WalletClient | Signer>(
     requestSignature:
       "getAddresses" in eoa
         ? account !== undefined
-          ? RequestSignature.withViemWalletClient(eoa, account)
+          ? RequestSignature.withViemWalletClient(
+              eoa as WalletClient<Transport, Chain | undefined, undefined>,
+              account,
+            )
           : RequestSignature.withViemWalletClient(
               eoa as WalletClient<Transport, Chain | undefined, Account>,
             )
         : RequestSignature.withEthersSigner(eoa),
   };
-};
+}
diff --git a/src/v06/account/hooks/requestSignature/viem.ts b/src/v06/account/hooks/requestSignature/viem.ts
index 24b523c..87b092e 100644
--- a/src/v06/account/hooks/requestSignature/viem.ts
+++ b/src/v06/account/hooks/requestSignature/viem.ts
@@ -2,11 +2,17 @@ import { WalletClient, Account, Transport, Chain } from "viem";
 import { privateKeyToAccount, generatePrivateKey } from "viem/accounts";
 import { RequestSignatureFunc } from "../types";
 
-export const withViemWalletClient = <W extends WalletClient>(
-  ...args: W["account"] extends Account
-    ? [client: W]
-    : [client: W, account: Account]
-): RequestSignatureFunc => {
+export function withViemWalletClient(
+  client: WalletClient<Transport, Chain | undefined, undefined>,
+  account: Account,
+): RequestSignatureFunc;
+export function withViemWalletClient(
+  client: WalletClient<Transport, Chain | undefined, Account>,
+): RequestSignatureFunc;
+export function withViemWalletClient(
+  client: WalletClient,
+  account?: Account,
+): RequestSignatureFunc {
   const dummy = privateKeyToAccount(generatePrivateKey());
   return async (type, message) => {
     switch (type) {
@@ -15,7 +21,6 @@ export const withViemWalletClient = <W extends WalletClient>(
       }
 
       case "final": {
-        const [client, account] = args;
         if (account) {
           return client.signMessage({ account, message: { raw: message } });
         }
@@ -27,4 +32,4 @@ export const withViemWalletClient = <W extends WalletClient>(
       }
     }
   };
-};
+}
diff --git a/src/v06/account/instance.ts b/src/v06/account/instance.ts
index 6b65ede..c0fadb0 100644
--- a/src/v06/account/instance.ts
+++ b/src/v06/account/instance.ts
@@ -9,11 +9,10 @@ import {
   concat,
   encodeFunctionData,
   PublicClient,
-  BaseError,
-  ContractFunctionRevertedError,
   RpcStateOverride,
   Hex,
   zeroAddress,
+  isAddress,
 } from "viem";
 import { JsonRpcProvider, Contract } from "ethers";
 import {
@@ -213,20 +212,15 @@ export class Instance<A extends Abi, F extends Abi> {
           functionName: "getSenderAddress",
           args: [await this.getInitCode()],
         });
-      } catch (error) {
-        if (error instanceof BaseError) {
-          const revertError = error.walk(
-            (err) => err instanceof ContractFunctionRevertedError,
-          );
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      } catch (error: any) {
+        const metaMessage = error?.metaMessages?.[1];
+        if (typeof metaMessage !== "string") throw error;
 
-          if (revertError instanceof ContractFunctionRevertedError) {
-            this.sender = revertError.data?.args?.[0] as Address;
-          } else {
-            throw error;
-          }
-        } else {
-          throw error;
-        }
+        const addr = metaMessage.trim().slice(1, -1);
+        if (!isAddress(addr)) throw error;
+
+        this.sender = addr;
       }
     }
 
diff --git a/yarn.lock b/yarn.lock
index 99454c4..40de4b3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -899,9 +899,9 @@
   integrity sha512-+1VkjdD0QBLPodGrJUeqarH8VAIvQODIbwh9XpP5Syisf7YoQgsJKPNFoqqLQlu+VQ/tVSshMR6loPMn8U+dPg==
 
 "@scure/base@~1.1.0", "@scure/base@~1.1.2":
-  version "1.1.5"
-  resolved "https://registry.yarnpkg.com/@scure/base/-/base-1.1.5.tgz#1d85d17269fe97694b9c592552dd9e5e33552157"
-  integrity sha512-Brj9FiG2W1MRQSTB212YVPRrcbjkv48FoZi/u4l/zds/ieRrqsh7aUf6CLwkAq61oKXr/ZlTzlY66gLIj3TFTQ==
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/@scure/base/-/base-1.1.6.tgz#8ce5d304b436e4c84f896e0550c83e4d88cb917d"
+  integrity sha512-ok9AWwhcgYuGG3Zfhyqg+zwl+Wn5uE+dwC0NV/2qQkx4dABbb/bx96vWu8NSj+BNjjSjno+JRYRjle1jV08k3g==
 
 "@scure/bip32@1.3.2":
   version "1.3.2"
@@ -3335,10 +3335,10 @@ v8-to-istanbul@^9.0.1:
     "@types/istanbul-lib-coverage" "^2.0.1"
     convert-source-map "^1.6.0"
 
-viem@^2.7.19:
-  version "2.7.19"
-  resolved "https://registry.yarnpkg.com/viem/-/viem-2.7.19.tgz#fa6bd8f46df2f0332e5ca6d116772dff6f161a72"
-  integrity sha512-UOMeqy+8p2709ra2j9HEOL1NfjsXZzlJ8gwR6YO/zXH8KIZvyzW07t4iQARF5+ShVZ/7+/1ec8oPjVi1M//33A==
+viem@^2.9.12:
+  version "2.9.12"
+  resolved "https://registry.yarnpkg.com/viem/-/viem-2.9.12.tgz#27a865f8bd95dc1de7931bbcad485bf561dc1027"
+  integrity sha512-wxeFgcdEbf9+CYGGS2NrxlbhZQc3kNDArEjFtI7jAMttcQSHle9KFps+kRa35poARi1LKS2MtAa9ODPloNRlcw==
   dependencies:
     "@adraffy/ens-normalize" "1.10.0"
     "@noble/curves" "1.2.0"