diff --git a/.gas-snapshot b/.gas-snapshot
index 91954f27..d7e0d354 100644
--- a/.gas-snapshot
+++ b/.gas-snapshot
@@ -19,7 +19,7 @@ ModuleTesting:testFixedTermDutchAuctionSettlementAuctionNotStarted() (gas: 44149
 ModuleTesting:testFixedTermDutchAuctionSettlementGetSettlementAuctionExpired() (gas: 440892)
 ModuleTesting:testFixedTermDutchAuctionSettlementNotValid() (gas: 437177)
 ModuleTesting:testFixedTermDutchAuctionSettlementValid() (gas: 438084)
-ModuleTesting:testModuleValidation() (gas: 1262975)
+ModuleTesting:testModuleValidation() (gas: 1280821)
 PausableNonReentrantImpl:test() (gas: 2464)
 PausableNonReentrantImpl:testReentrancy() (gas: 2757)
 TestBorrowerEnforcer:testBERevertAdditionalTransfersFromBorrower() (gas: 76462)
@@ -32,11 +32,11 @@ TestCustodian:testCannotMintInvalidLoanValidCustodian() (gas: 77943)
 TestCustodian:testCustodianCannotBeAuthorized() (gas: 142026)
 TestCustodian:testCustodySelector() (gas: 2732377)
 TestCustodian:testDefaultCustodySelectorRevert() (gas: 72478)
-TestCustodian:testGenerateOrderInvalidPostRepayment() (gas: 172899)
+TestCustodian:testGenerateOrderInvalidPostRepayment() (gas: 172939)
 TestCustodian:testGenerateOrderInvalidPostSettlement() (gas: 163178)
-TestCustodian:testGenerateOrderRepay() (gas: 177059)
-TestCustodian:testGenerateOrderRepayAsRepayApprovedBorrower() (gas: 193527)
-TestCustodian:testGenerateOrderRepayERC1155AndERC20() (gas: 875677)
+TestCustodian:testGenerateOrderRepay() (gas: 177099)
+TestCustodian:testGenerateOrderRepayAsRepayApprovedBorrower() (gas: 193567)
+TestCustodian:testGenerateOrderRepayERC1155AndERC20() (gas: 876545)
 TestCustodian:testGenerateOrderRepayERC1155AndERC20HandlerAuthorized() (gas: 804495)
 TestCustodian:testGenerateOrderRepayInvalidHookAddress() (gas: 97556)
 TestCustodian:testGenerateOrderRepayInvalidHookReturnType() (gas: 91917)
@@ -58,11 +58,11 @@ TestCustodian:testName() (gas: 7077)
 TestCustodian:testNonPayableFunctions() (gas: 215289)
 TestCustodian:testOnlySeaport() (gas: 17915)
 TestCustodian:testPreviewOrderNoActiveLoan() (gas: 105729)
-TestCustodian:testPreviewOrderRepay() (gas: 231938)
+TestCustodian:testPreviewOrderRepay() (gas: 232018)
 TestCustodian:testPreviewOrderSettlement() (gas: 191813)
 TestCustodian:testPreviewOrderSettlementInvalidFufliller() (gas: 110326)
 TestCustodian:testPreviewOrderSettlementInvalidRepayer() (gas: 116902)
-TestCustodian:testRatifyOrder() (gas: 183877)
+TestCustodian:testRatifyOrder() (gas: 183917)
 TestCustodian:testSeaportMetadata() (gas: 8588)
 TestCustodian:testSupportsInterface() (gas: 9428)
 TestCustodian:testSymbol() (gas: 7194)
@@ -73,15 +73,15 @@ TestLenderEnforcer:testLERevertInvalidLoanTerms() (gas: 81096)
 TestLenderEnforcer:testLEValidLoanTerms() (gas: 72169)
 TestLenderEnforcer:testLEValidLoanTermsAnyBorrower() (gas: 72234)
 TestLenderEnforcer:testLEValidLoanTermsWithAdditionalTransfers() (gas: 73525)
-TestLoanCombinations:testLoan20For721SimpleInterestDutchFixedRepay() (gas: 592542)
-TestLoanCombinations:testLoan20for20SimpleInterestDutchFixedRepay() (gas: 599755)
-TestLoanCombinations:testLoan721for20SimpleInterestDutchFixedRepay() (gas: 589973)
-TestLoanCombinations:testLoanAstariaSettlementRepay() (gas: 579790)
+TestLoanCombinations:testLoan20For721SimpleInterestDutchFixedRepay() (gas: 593400)
+TestLoanCombinations:testLoan20for20SimpleInterestDutchFixedRepay() (gas: 599835)
+TestLoanCombinations:testLoan721for20SimpleInterestDutchFixedRepay() (gas: 590053)
+TestLoanCombinations:testLoanAstariaSettlementRepay() (gas: 579870)
 TestNewLoan:testBuyNowPayLater() (gas: 3018543)
 TestNewLoan:testNewLoanAs1271ProxyAccountSender() (gas: 874195)
 TestNewLoan:testNewLoanAs1271ProxyAccountThirdPartyFiller() (gas: 885220)
 TestNewLoan:testNewLoanERC721CollateralDefaultTerms2() (gas: 429635)
-TestNewLoan:testNewLoanRefinance() (gas: 589971)
+TestNewLoan:testNewLoanRefinance() (gas: 593205)
 TestNewLoan:testNewLoanViaOriginatorBorrowerApprovalAndLenderApproval() (gas: 324707)
 TestNewLoan:testNewLoanViaOriginatorLenderApproval() (gas: 383503)
 TestNewLoan:testSettleLoan() (gas: 642162)
@@ -89,21 +89,21 @@ TestPausableNonReentrant:testNotOwner() (gas: 21276)
 TestPausableNonReentrant:testPauseAndUnpause() (gas: 22643)
 TestPausableNonReentrant:testReentrancy() (gas: 15404)
 TestPausableNonReentrant:testUnpauseWhenNotPaused() (gas: 12604)
-TestRepayLoan:testRepayLoanApprovedRepayer() (gas: 666719)
-TestRepayLoan:testRepayLoanBase() (gas: 599585)
+TestRepayLoan:testRepayLoanApprovedRepayer() (gas: 666799)
+TestRepayLoan:testRepayLoanBase() (gas: 599665)
 TestRepayLoan:testRepayLoanGenerateOrderNotSeaport() (gas: 438777)
 TestRepayLoan:testRepayLoanInSettlement() (gas: 585692)
-TestRepayLoan:testRepayLoanInvalidRepayer() (gas: 603689)
-TestRepayLoan:testRepayLoanThatDoesNotExist() (gas: 857790)
-TestSimpleInterestPricing:test_calculateInterest() (gas: 869870)
-TestSimpleInterestPricing:test_getPaymentConsideration() (gas: 916886)
-TestSimpleInterestPricing:test_getRefinanceConsideration() (gas: 907796)
+TestRepayLoan:testRepayLoanInvalidRepayer() (gas: 603729)
+TestRepayLoan:testRepayLoanThatDoesNotExist() (gas: 857990)
+TestSimpleInterestPricing:test_calculateInterest() (gas: 887709)
+TestSimpleInterestPricing:test_getPaymentConsideration() (gas: 935199)
+TestSimpleInterestPricing:test_getRefinanceConsideration() (gas: 926059)
 TestStarport:testAcquireTokensFail() (gas: 60473)
 TestStarport:testAcquireTokensSuccess() (gas: 162844)
 TestStarport:testActive() (gas: 69358)
 TestStarport:testAdditionalTransfers() (gas: 300747)
 TestStarport:testAdditionalTransfersOriginate() (gas: 275532)
-TestStarport:testAdditionalTransfersRefinance() (gas: 218120)
+TestStarport:testAdditionalTransfersRefinance() (gas: 218554)
 TestStarport:testApplyRefinanceConsiderationToLoanMalformed() (gas: 129484)
 TestStarport:testCannotIssueSameLoanTwice() (gas: 364109)
 TestStarport:testCannotOriginateWhilePaused() (gas: 73479)
@@ -121,7 +121,7 @@ TestStarport:testExoticDebtWithNoCaveatsNotAsBorrower() (gas: 376631)
 TestStarport:testIncrementCaveatNonce() (gas: 35117)
 TestStarport:testInitializedFlagSetProperly() (gas: 67372)
 TestStarport:testInvalidAdditionalTransfersOriginate() (gas: 230418)
-TestStarport:testInvalidAdditionalTransfersRefinance() (gas: 170620)
+TestStarport:testInvalidAdditionalTransfersRefinance() (gas: 171054)
 TestStarport:testInvalidAmountCollateral() (gas: 165960)
 TestStarport:testInvalidAmountCollateral721() (gas: 165960)
 TestStarport:testInvalidItemType() (gas: 151908)
@@ -133,7 +133,7 @@ TestStarport:testNonDefaultCustodianCustodyCallSuccess() (gas: 290384)
 TestStarport:testNonPayableFunctions() (gas: 114479)
 TestStarport:testOverrideFeeRake() (gas: 379857)
 TestStarport:testPause() (gas: 18127)
-TestStarport:testRefinancePostRepaymentFails() (gas: 127765)
+TestStarport:testRefinancePostRepaymentFails() (gas: 127805)
 TestStarport:testStargateGetOwner() (gas: 8851)
 TestStarport:testTokenNoCodeCollateral() (gas: 150699)
 TestStarport:testTokenNoCodeDebt() (gas: 180972)
diff --git a/lib/seaport b/lib/seaport
index 4f4e7c20..50a0c096 160000
--- a/lib/seaport
+++ b/lib/seaport
@@ -1 +1 @@
-Subproject commit 4f4e7c205b957b91bc74f93d69838c9c32eece40
+Subproject commit 50a0c09621f90196e8d07dbfb6c564256a241e66
diff --git a/src/pricing/BasePricing.sol b/src/pricing/BasePricing.sol
index 189445dd..2190d549 100644
--- a/src/pricing/BasePricing.sol
+++ b/src/pricing/BasePricing.sol
@@ -34,7 +34,7 @@ import {Validation} from "../lib/Validation.sol";
 import {StarportLib} from "../lib/StarportLib.sol";
 
 import {ReceivedItem} from "seaport-types/src/lib/ConsiderationStructs.sol";
-import {SpentItem} from "seaport-types/src/lib/ConsiderationStructs.sol";
+import {SpentItem, ItemType} from "seaport-types/src/lib/ConsiderationStructs.sol";
 import {FixedPointMathLib} from "solady/src/utils/FixedPointMathLib.sol";
 
 abstract contract BasePricing is Pricing {
@@ -84,6 +84,7 @@ abstract contract BasePricing is Pricing {
         for (; i < loan.debt.length;) {
             uint256 interest = getInterest(loan, details.rate, loan.start, block.timestamp, i, details.decimals);
 
+            if (interest == 0 && loan.debt[i].itemType == ItemType.ERC20) interest = 1;
             if (carryConsideration.length > 0) {
                 carryConsideration[i] = SpentItem({
                     itemType: loan.debt[i].itemType,
diff --git a/test/unit-testing/TestPricing.sol b/test/unit-testing/TestPricing.sol
index 41d0e638..56e7211c 100644
--- a/test/unit-testing/TestPricing.sol
+++ b/test/unit-testing/TestPricing.sol
@@ -61,7 +61,8 @@ contract TestSimpleInterestPricing is StarportTest, DeepEq {
 
         assertEq(repayConsideration.length, 1);
         assertEq(repayConsideration[0].token, address(erc20s[0]));
-        assertEq(repayConsideration[0].amount, 100);
+        // minimum interest accrual is 1 wei
+        assertEq(repayConsideration[0].amount, 101);
         assertEq(repayConsideration[0].identifier, 0);
 
         assertEq(repayCarryConsideration.length, 1);