diff --git a/target_chains/ethereum/contracts/contracts/entropy/Entropy.sol b/target_chains/ethereum/contracts/contracts/entropy/Entropy.sol
index e84892e70f..fad430922f 100644
--- a/target_chains/ethereum/contracts/contracts/entropy/Entropy.sol
+++ b/target_chains/ethereum/contracts/contracts/entropy/Entropy.sol
@@ -1081,7 +1081,7 @@ abstract contract Entropy is IEntropy, EntropyState {
         _state.seed = keccak256(
             abi.encodePacked(
                 block.timestamp,
-                block.difficulty,
+                block.prevrandao,
                 msg.sender,
                 _state.seed
             )
diff --git a/target_chains/ethereum/contracts/contracts/pyth/Pyth.sol b/target_chains/ethereum/contracts/contracts/pyth/Pyth.sol
index 18d51ca5f8..d899474237 100644
--- a/target_chains/ethereum/contracts/contracts/pyth/Pyth.sol
+++ b/target_chains/ethereum/contracts/contracts/pyth/Pyth.sol
@@ -683,7 +683,7 @@ abstract contract Pyth is
     }
 
     function version() public pure returns (string memory) {
-        return "1.4.4-alpha.5";
+        return "1.4.4";
     }
 
     /// @notice Calculates TWAP from two price points
diff --git a/target_chains/ethereum/contracts/forge-test/Echo.t.sol b/target_chains/ethereum/contracts/forge-test/Echo.t.sol
index c9df2a40a2..8b492fc412 100644
--- a/target_chains/ethereum/contracts/forge-test/Echo.t.sol
+++ b/target_chains/ethereum/contracts/forge-test/Echo.t.sol
@@ -1171,7 +1171,7 @@ contract EchoTest is Test, EchoEvents, IEchoConsumer, EchoTestUtils {
         assertApproxEqRel(
             gas2Used,
             gas1Used * 2,
-            0.1e18, // 10% tolerance
+            0.2e18, // 20% tolerance
             "Gas usage should scale roughly linearly"
         );
     }
diff --git a/target_chains/ethereum/contracts/foundry.toml b/target_chains/ethereum/contracts/foundry.toml
index 627e6d2712..57d77cec3d 100644
--- a/target_chains/ethereum/contracts/foundry.toml
+++ b/target_chains/ethereum/contracts/foundry.toml
@@ -1,5 +1,5 @@
 [profile.default]
-solc_version = '0.8.4'
+solc_version = '0.8.29'
 optimizer = true
 optimizer_runs = 200
 src = 'contracts'
diff --git a/target_chains/ethereum/contracts/hardhat.config.ts b/target_chains/ethereum/contracts/hardhat.config.ts
index baf60b668f..ce5572efdb 100644
--- a/target_chains/ethereum/contracts/hardhat.config.ts
+++ b/target_chains/ethereum/contracts/hardhat.config.ts
@@ -112,7 +112,7 @@ module.exports = {
     ],
   },
   solidity: {
-    version: "0.8.4",
+    version: "0.8.29",
     settings: {
       optimizer: {
         enabled: true,
diff --git a/target_chains/ethereum/contracts/truffle-config.js b/target_chains/ethereum/contracts/truffle-config.js
index 309bdade8b..ac6fd799dc 100644
--- a/target_chains/ethereum/contracts/truffle-config.js
+++ b/target_chains/ethereum/contracts/truffle-config.js
@@ -33,7 +33,7 @@ module.exports = {
 
   compilers: {
     solc: {
-      version: "0.8.4",
+      version: "0.8.29",
       settings: {
         optimizer: {
           enabled: true,