diff --git a/onchain/src/Optimizer.sol b/onchain/src/Optimizer.sol
index 4efa74c..58a6371 100644
--- a/onchain/src/Optimizer.sol
+++ b/onchain/src/Optimizer.sol
@@ -132,11 +132,11 @@ contract Optimizer is Initializable, UUPSUpgradeable, IOptimizer {
     ///      preventing unbounded growth from blocking recenter().
     ///
     ///      Note (EIP-150 / 63-64 rule): the outer getLiquidityParams() call must
-    ///      arrive with at least ⌈200_000 × 64/63⌉ ≈ 203_175 gas for the inner
-    ///      staticcall to actually receive 200 000.  Callers with exactly 200–203 k
+    ///      arrive with at least ⌈500_000 × 64/63⌉ ≈ 507_937 gas for the inner
+    ///      staticcall to actually receive 500 000.  Callers with exactly 500–508 k
     ///      gas will see a spurious bear-defaults fallback.  This is not a practical
     ///      concern from recenter(), which always has abundant gas.
-    uint256 internal constant CALCULATE_PARAMS_GAS_LIMIT = 200_000;
+    uint256 internal constant CALCULATE_PARAMS_GAS_LIMIT = 500_000;
 
     /**
      * @notice Initialize the Optimizer.
diff --git a/onchain/test/FitnessEvaluator.t.sol b/onchain/test/FitnessEvaluator.t.sol
index 9434163..5b91eca 100644
--- a/onchain/test/FitnessEvaluator.t.sol
+++ b/onchain/test/FitnessEvaluator.t.sol
@@ -152,7 +152,7 @@ contract FitnessEvaluator is Test {
     /// @dev Must match Optimizer.CALCULATE_PARAMS_GAS_LIMIT. Candidates that exceed
     ///      this limit would unconditionally produce bear defaults in production and
     ///      are disqualified (fitness = 0) rather than scored against their theoretical output.
-    uint256 internal constant CALCULATE_PARAMS_GAS_LIMIT = 200_000;
+    uint256 internal constant CALCULATE_PARAMS_GAS_LIMIT = 500_000;
 
     /// @dev Soft gas penalty: wei deducted from fitness per gas unit used by calculateParams.
     ///      Creates selection pressure toward leaner programs while keeping gas as a