diff --git a/examples/nft/contracts/Connected.sol b/examples/nft/contracts/Connected.sol
index 9c19544..6bd78ee 100644
--- a/examples/nft/contracts/Connected.sol
+++ b/examples/nft/contracts/Connected.sol
@@ -20,7 +20,7 @@ contract Connected is
     GatewayEVM public immutable gateway;
     uint256 private _nextTokenId;
     address public counterparty;
-    uint256 public gasLimit;
+    uint256 public immutable gasLimit;
 
     error InvalidAddress();
     error Unauthorized();
diff --git a/examples/nft/contracts/Universal.sol b/examples/nft/contracts/Universal.sol
index af49446..66aaa4b 100644
--- a/examples/nft/contracts/Universal.sol
+++ b/examples/nft/contracts/Universal.sol
@@ -26,7 +26,7 @@ contract Universal is
     address public immutable uniswapRouter;
     uint256 private _nextTokenId;
     bool public isUniversal = true;
-    uint256 public gasLimit;
+    uint256 public immutable gasLimit;
 
     error TransferFailed();
     error Unauthorized();
diff --git a/examples/token/contracts/Universal.sol b/examples/token/contracts/Universal.sol
index f566869..ad4024a 100644
--- a/examples/token/contracts/Universal.sol
+++ b/examples/token/contracts/Universal.sol
@@ -16,7 +16,7 @@ contract Universal is ERC20, Ownable2Step, UniversalContract, Events {
     address public immutable uniswapRouter;
     uint256 private _nextTokenId;
     bool public isUniversal = true;
-    uint256 public gasLimit;
+    uint256 public immutable gasLimit;
 
     error TransferFailed();
     error Unauthorized();