diff --git a/src/models/lending/market.ts b/src/models/lending/market.ts
index ecde757..434ab09 100644
--- a/src/models/lending/market.ts
+++ b/src/models/lending/market.ts
@@ -5,11 +5,12 @@ import * as Layout from "./../../utils/layout";
 export const LendingMarketLayout: typeof BufferLayout.Structure = BufferLayout.struct(
   [
     BufferLayout.u8('version'),
+    BufferLayout.u8('bumpSeed'),
     Layout.publicKey("quoteMint"),
     Layout.publicKey("tokenProgramId"),
 
     // extra space for future contract changes
-    BufferLayout.blob(63, "padding"),
+    BufferLayout.blob(62, "padding"),
   ],
 );
 
diff --git a/src/models/lending/obligation.ts b/src/models/lending/obligation.ts
index bb24ee0..7da30b6 100644
--- a/src/models/lending/obligation.ts
+++ b/src/models/lending/obligation.ts
@@ -6,8 +6,6 @@ import * as Layout from "./../../utils/layout";
 export const LendingObligationLayout: typeof BufferLayout.Structure = BufferLayout.struct(
   [
     BufferLayout.u8('version'),
-    /// Slot when obligation was updated. Used for calculating interest.
-    Layout.uint64("lastUpdateSlot"),
     /// Amount of collateral tokens deposited for this obligation
     Layout.uint64("depositedCollateral"),
     /// Reserve which collateral tokens were deposited into
@@ -33,7 +31,6 @@ export const isLendingObligation = (info: AccountInfo<Buffer>) => {
 export interface LendingObligation {
   version: number;
 
-  lastUpdateSlot: BN;
   depositedCollateral: BN;
   collateralReserve: PublicKey;
   cumulativeBorrowRateWad: BN; // decimals