diff --git a/README.md b/README.md
index b4458d7e..83132e5b 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,16 @@ If you don't see a network, feel free to open an issue.
 MIT
 
 ## Addresses
+<details>
+<summary>v3.3</summary>
+| Name                 | Address                                    |
+| -------------------- | ------------------------------------------ |
+| Meta Factory         | [0xd703aaE79538628d27099B8c4f621bE4CCd142d5](https://contractscan.xyz/contract/0xd703aae79538628d27099b8c4f621be4ccd142d5) |
+| Factory              | [0x2577507b78c2008Ff367261CB6285d44ba5eF2E9](https://contractscan.xyz/contract/0x2577507b78c2008Ff367261CB6285d44ba5eF2E9) |
+| Kernel               | [0xd6CEDDe84be40893d153Be9d467CD6aD37875b28](https://contractscan.xyz/contract/0xd6CEDDe84be40893d153Be9d467CD6aD37875b28) |
+</details>
+
+
 <details>
 <summary>v3.2</summary>
 
diff --git a/src/factory/KernelFactory.sol b/src/factory/KernelFactory.sol
index d0ee899c..b7bf9449 100644
--- a/src/factory/KernelFactory.sol
+++ b/src/factory/KernelFactory.sol
@@ -6,11 +6,13 @@ import {LibClone} from "solady/utils/LibClone.sol";
 
 contract KernelFactory {
     error InitializeError();
+    error ImplementationNotDeployed();
 
     address public immutable implementation;
 
     constructor(address _impl) {
         implementation = _impl;
+        require(_impl.code.length > 0, ImplementationNotDeployed());
     }
 
     function createAccount(bytes calldata data, bytes32 salt) public payable returns (address) {