diff --git a/specs/protocol/preinstalls.md b/specs/protocol/preinstalls.md
index f042325a4..84398b368 100644
--- a/specs/protocol/preinstalls.md
+++ b/specs/protocol/preinstalls.md
@@ -12,6 +12,7 @@
 - [SafeSingletonFactory](#safesingletonfactory)
 - [Multicall3](#multicall3)
 - [Create2Deployer](#create2deployer)
+- [CreateX](#createx)
 - [Arachnid's Deterministic Deployment Proxy](#arachnids-deterministic-deployment-proxy)
 - [Permit2](#permit2)
 - [ERC-4337 v0.6.0 EntryPoint](#erc-4337-v060-entrypoint)
@@ -42,7 +43,8 @@ The following table includes each of the preinstalls.
 | MultiSendCallOnly                         | 0xA1dabEF33b3B82c7814B6D82A79e50F4AC44102B |
 | SafeSingletonFactory                      | 0x914d7Fec6aaC8cd542e72Bca78B30650d45643d7 |
 | Multicall3                                | 0xcA11bde05977b3631167028862bE2a173976CA11 |
-| create2Deployer                           | 0x13b0D85CcB8bf860b6b79AF3029fCA081AE9beF2 |
+| Create2Deployer                           | 0x13b0D85CcB8bf860b6b79AF3029fCA081AE9beF2 |
+| CreateX                           | 0xba5Ed099633D3B313e4D5F7bdc1305d3c28ba5Ed |
 | Arachnid's Deterministic Deployment Proxy | 0x4e59b44847b379578588920cA78FbF26c0B4956C |
 | Permit2                                   | 0x000000000022D473030F116dDEE9F6B43aC78BA3 |
 | ERC-4337 v0.6.0 EntryPoint                | 0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789 |
@@ -157,6 +159,18 @@ Address: `0x13b0D85CcB8bf860b6b79AF3029fCA081AE9beF2`
 When Canyon activates, the contract code at `0x13b0D85CcB8bf860b6b79AF3029fCA081AE9beF2` is set to
 `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`.
 
+## CreateX
+
+[Implementation](https://github.com/pcaversaccio/createx/blob/main/src/CreateX.sol)
+
+Address: `0xba5Ed099633D3B313e4D5F7bdc1305d3c28ba5Ed`
+
+CreateX introduces additional logic for deploying contracts using `CREATE`, `CREATE2` and `CREATE3`.
+It adds [salt protection](https://github.com/pcaversaccio/createx#special-features) for sender and chainID
+and includes a set of helper functions.
+
+The `keccak256` of the CreateX bytecode is `0xbd8a7ea8cfca7b4e5f5041d7d4b17bc317c5ce42cfbc42066a00cf26b43eb53f`.
+
 ## Arachnid's Deterministic Deployment Proxy
 
 [Implementation](https://github.com/Arachnid/deterministic-deployment-proxy/blob/v1.0.0/source/deterministic-deployment-proxy.yul)