diff --git a/src/StEthBundler.sol b/src/StEthBundler.sol
index 1459fb83..0a31c9bf 100644
--- a/src/StEthBundler.sol
+++ b/src/StEthBundler.sol
@@ -28,8 +28,8 @@ abstract contract StEthBundler is BaseBundler {
     /* CONSTRUCTOR */
 
     /// @dev Warning: assumes the given addresses are non-zero (they are not expected to be deployment arguments).
-    constructor(address stEth, address wstEth) {
-        ST_ETH = stEth;
+    constructor(address wstEth) {
+        ST_ETH = IWstEth(wstEth).stETH();
         WST_ETH = wstEth;
 
         ERC20(ST_ETH).safeApprove(WST_ETH, type(uint256).max);
diff --git a/src/ethereum/EthereumStEthBundler.sol b/src/ethereum/EthereumStEthBundler.sol
index caf5bfcc..d9a5540f 100644
--- a/src/ethereum/EthereumStEthBundler.sol
+++ b/src/ethereum/EthereumStEthBundler.sol
@@ -12,5 +12,5 @@ import {StEthBundler} from "../StEthBundler.sol";
 abstract contract EthereumStEthBundler is StEthBundler {
     /* CONSTRUCTOR */
 
-    constructor() StEthBundler(MainnetLib.ST_ETH, MainnetLib.WST_ETH) {}
+    constructor() StEthBundler(MainnetLib.WST_ETH) {}
 }
diff --git a/src/ethereum/libraries/MainnetLib.sol b/src/ethereum/libraries/MainnetLib.sol
index 6b14d904..4307da02 100644
--- a/src/ethereum/libraries/MainnetLib.sol
+++ b/src/ethereum/libraries/MainnetLib.sol
@@ -5,9 +5,6 @@ library MainnetLib {
     /// @dev The address of the WETH contract on Ethereum.
     address internal constant WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
 
-    /// @dev The address of the stETH contract on Ethereum.
-    address internal constant ST_ETH = 0xae7ab96520DE3A18E5e111B5EaAb095312D7fE84;
-
     /// @dev The address of the wstETH contract on Ethereum.
     address internal constant WST_ETH = 0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0;
 
diff --git a/src/goerli/GoerliBundler.sol b/src/goerli/GoerliBundler.sol
index 6a2897f1..1e4659d1 100644
--- a/src/goerli/GoerliBundler.sol
+++ b/src/goerli/GoerliBundler.sol
@@ -26,9 +26,5 @@ contract GoerliBundler is
 {
     /* CONSTRUCTOR */
 
-    constructor(address morpho)
-        WNativeBundler(GoerliLib.WETH)
-        StEthBundler(GoerliLib.ST_ETH, GoerliLib.WST_ETH)
-        MorphoBundler(morpho)
-    {}
+    constructor(address morpho) WNativeBundler(GoerliLib.WETH) StEthBundler(GoerliLib.WST_ETH) MorphoBundler(morpho) {}
 }
diff --git a/src/goerli/libraries/GoerliLib.sol b/src/goerli/libraries/GoerliLib.sol
index 27b946a5..ba3c7a80 100644
--- a/src/goerli/libraries/GoerliLib.sol
+++ b/src/goerli/libraries/GoerliLib.sol
@@ -5,9 +5,6 @@ library GoerliLib {
     /// @dev The address of the WETH contract on Ethereum.
     address internal constant WETH = 0xB4FBF271143F4FBf7B91A5ded31805e42b2208d6;
 
-    /// @dev The address of the stETH contract on Ethereum.
-    address internal constant ST_ETH = 0x1643E812aE58766192Cf7D2Cf9567dF2C37e9B7F;
-
     /// @dev The address of the wstETH contract on Ethereum.
     address internal constant WST_ETH = 0x6320cD32aA674d2898A68ec82e869385Fc5f7E2f;
 }