diff --git a/packages/optimistic-oracle-v2/schema.graphql b/packages/optimistic-oracle-v2/schema.graphql
index 832db18..32a2e95 100644
--- a/packages/optimistic-oracle-v2/schema.graphql
+++ b/packages/optimistic-oracle-v2/schema.graphql
@@ -79,4 +79,6 @@ type OptimisticPriceRequest @entity {
   bond: BigInt
 
   eventBased: Boolean
+
+  lastUpdated: BigInt
 }
diff --git a/packages/optimistic-oracle-v2/src/mappings/optimisticOracleV2.ts b/packages/optimistic-oracle-v2/src/mappings/optimisticOracleV2.ts
index 26452bf..6995ba6 100644
--- a/packages/optimistic-oracle-v2/src/mappings/optimisticOracleV2.ts
+++ b/packages/optimistic-oracle-v2/src/mappings/optimisticOracleV2.ts
@@ -76,6 +76,7 @@ export function handleOptimisticRequestPrice(event: RequestPrice): void {
   request.requestBlockNumber = event.block.number;
   request.requestLogIndex = event.logIndex;
   request.requestHash = event.transaction.hash;
+  request.lastUpdated = event.block.timestamp;
 
   request.state = getState(
     event.address,
@@ -139,6 +140,7 @@ export function handleOptimisticProposePrice(event: ProposePrice): void {
   request.proposalBlockNumber = event.block.number;
   request.proposalLogIndex = event.logIndex;
   request.proposalHash = event.transaction.hash;
+  request.lastUpdated = event.block.timestamp;
 
   request.state = getState(
     event.address,
@@ -184,6 +186,7 @@ export function handleOptimisticDisputePrice(event: DisputePrice): void {
   request.disputeBlockNumber = event.block.number;
   request.disputeLogIndex = event.logIndex;
   request.disputeHash = event.transaction.hash;
+  request.lastUpdated = event.block.timestamp;
 
   request.state = getState(
     event.address,
@@ -237,6 +240,7 @@ export function handleOptimisticSettle(event: Settle): void {
   request.settlementBlockNumber = event.block.number;
   request.settlementLogIndex = event.logIndex;
   request.settlementHash = event.transaction.hash;
+  request.lastUpdated = event.block.timestamp;
 
   request.state = getState(
     event.address,
@@ -265,6 +269,7 @@ export function handleSetCustomLiveness(call: SetCustomLivenessCall): void {
 
   let request = getOrCreateOptimisticPriceRequest(requestId);
   request.customLiveness = call.inputs.customLiveness;
+  request.lastUpdated = call.block.timestamp;
 
   request.save();
 }
@@ -285,6 +290,7 @@ export function handleSetBond(call: SetBondCall): void {
 
   let request = getOrCreateOptimisticPriceRequest(requestId);
   request.bond = call.inputs.bond;
+  request.lastUpdated = call.block.timestamp;
 
   request.save();
 }
@@ -304,6 +310,7 @@ export function handleSetEventBased(call: SetEventBasedCall): void {
 
   let request = getOrCreateOptimisticPriceRequest(requestId);
   request.eventBased = true;
+  request.lastUpdated = call.block.timestamp;
 
   request.save();
 }
diff --git a/packages/optimistic-oracle-v2/src/utils/helpers/optimisticOracle.ts b/packages/optimistic-oracle-v2/src/utils/helpers/optimisticOracle.ts
index f4f9058..142d625 100644
--- a/packages/optimistic-oracle-v2/src/utils/helpers/optimisticOracle.ts
+++ b/packages/optimistic-oracle-v2/src/utils/helpers/optimisticOracle.ts
@@ -17,6 +17,7 @@ export function getOrCreateOptimisticPriceRequest(
     request.currency = Bytes.fromI32(0);
     request.reward = BIGINT_ZERO;
     request.finalFee = BIGINT_ZERO;
+    request.lastUpdated = BIGINT_ZERO;
   }
 
   return request as OptimisticPriceRequest;
diff --git a/packages/optimistic-oracle-v3/schema.graphql b/packages/optimistic-oracle-v3/schema.graphql
index 6385225..7414e52 100644
--- a/packages/optimistic-oracle-v3/schema.graphql
+++ b/packages/optimistic-oracle-v3/schema.graphql
@@ -55,4 +55,6 @@ type Assertion @entity {
   settlementHash: Bytes
 
   settlementLogIndex: BigInt
+
+  lastUpdated: BigInt
 }
diff --git a/packages/optimistic-oracle-v3/src/mappings/optimisticOracleV3.ts b/packages/optimistic-oracle-v3/src/mappings/optimisticOracleV3.ts
index 49ec8cb..89ad8c5 100644
--- a/packages/optimistic-oracle-v3/src/mappings/optimisticOracleV3.ts
+++ b/packages/optimistic-oracle-v3/src/mappings/optimisticOracleV3.ts
@@ -48,6 +48,7 @@ export function handleAssertionMade(event: AssertionMade): void {
   assertion.assertionBlockNumber = event.block.number;
   assertion.assertionHash = event.transaction.hash;
   assertion.assertionLogIndex = event.logIndex;
+  assertion.lastUpdated = event.block.timestamp;
 
   assertion.save();
 }
@@ -73,6 +74,7 @@ export function handleAssertionDisputed(event: AssertionDisputed): void {
   assertion.disputeBlockNumber = event.block.number;
   assertion.disputeLogIndex = event.logIndex;
   assertion.disputeHash = event.transaction.hash;
+  assertion.lastUpdated = event.block.timestamp;
 
   assertion.save();
 }
@@ -104,6 +106,7 @@ export function handleAssertionSettled(event: AssertionSettled): void {
   assertion.settlementBlockNumber = event.block.number;
   assertion.settlementLogIndex = event.logIndex;
   assertion.settlementHash = event.transaction.hash;
+  assertion.lastUpdated = event.block.timestamp;
 
   assertion.save();
 }
diff --git a/packages/optimistic-oracle/schema.graphql b/packages/optimistic-oracle/schema.graphql
index bde86b8..5b9ff4c 100644
--- a/packages/optimistic-oracle/schema.graphql
+++ b/packages/optimistic-oracle/schema.graphql
@@ -73,4 +73,6 @@ type OptimisticPriceRequest @entity {
   settlementHash: Bytes
 
   settlementLogIndex: BigInt
+
+  lastUpdated: BigInt
 }
diff --git a/packages/optimistic-oracle/src/mappings/optimisticOracle.ts b/packages/optimistic-oracle/src/mappings/optimisticOracle.ts
index 04d9b9e..b026106 100644
--- a/packages/optimistic-oracle/src/mappings/optimisticOracle.ts
+++ b/packages/optimistic-oracle/src/mappings/optimisticOracle.ts
@@ -74,6 +74,7 @@ export function handleOptimisticRequestPrice(event: RequestPrice): void {
   request.requestBlockNumber = event.block.number;
   request.requestLogIndex = event.logIndex;
   request.requestHash = event.transaction.hash;
+  request.lastUpdated = event.block.timestamp;
 
   request.state = getState(
     event.address,
@@ -134,6 +135,7 @@ export function handleOptimisticProposePrice(event: ProposePrice): void {
   request.proposalBlockNumber = event.block.number;
   request.proposalLogIndex = event.logIndex;
   request.proposalHash = event.transaction.hash;
+  request.lastUpdated = event.block.timestamp;
 
   request.state = getState(
     event.address,
@@ -179,6 +181,7 @@ export function handleOptimisticDisputePrice(event: DisputePrice): void {
   request.disputeBlockNumber = event.block.number;
   request.disputeLogIndex = event.logIndex;
   request.disputeHash = event.transaction.hash;
+  request.lastUpdated = event.block.timestamp;
 
   request.state = getState(
     event.address,
@@ -232,6 +235,7 @@ export function handleOptimisticSettle(event: Settle): void {
   request.settlementBlockNumber = event.block.number;
   request.settlementLogIndex = event.logIndex;
   request.settlementHash = event.transaction.hash;
+  request.lastUpdated = event.block.timestamp;
 
   request.state = getState(
     event.address,
@@ -260,6 +264,7 @@ export function handleSetBond(call: SetBondCall): void {
 
   let request = getOrCreateOptimisticPriceRequest(requestId);
   request.finalFee = call.outputs.totalBond;
+  request.lastUpdated = call.block.timestamp;
 
   request.save();
 }
diff --git a/packages/skinny-optimistic-oracle/schema.graphql b/packages/skinny-optimistic-oracle/schema.graphql
index cead771..e68e226 100644
--- a/packages/skinny-optimistic-oracle/schema.graphql
+++ b/packages/skinny-optimistic-oracle/schema.graphql
@@ -77,4 +77,6 @@ type OptimisticPriceRequest @entity {
   customLiveness: BigInt
 
   bond: BigInt
+
+  lastUpdated: BigInt
 }
diff --git a/packages/skinny-optimistic-oracle/src/mappings/skinnyOptimisticOracle.ts b/packages/skinny-optimistic-oracle/src/mappings/skinnyOptimisticOracle.ts
index 7951769..ef873ee 100644
--- a/packages/skinny-optimistic-oracle/src/mappings/skinnyOptimisticOracle.ts
+++ b/packages/skinny-optimistic-oracle/src/mappings/skinnyOptimisticOracle.ts
@@ -85,6 +85,7 @@ export function handleOptimisticRequestPrice(event: RequestPrice): void {
   request.requestHash = event.transaction.hash;
   request.bond = event.params.request.bond;
   request.customLiveness = event.params.request.customLiveness;
+  request.lastUpdated = event.block.timestamp;
 
   request.state = getState<RequestPriceRequestStruct>(
     event.address,
@@ -129,6 +130,7 @@ export function handleOptimisticProposePrice(event: ProposePrice): void {
   request.proposalBlockNumber = event.block.number;
   request.proposalLogIndex = event.logIndex;
   request.proposalHash = event.transaction.hash;
+  request.lastUpdated = event.block.timestamp;
 
   request.state = getState<ProposePriceRequestStruct>(
     event.address,
@@ -171,6 +173,7 @@ export function handleOptimisticDisputePrice(event: DisputePrice): void {
   request.disputeBlockNumber = event.block.number;
   request.disputeLogIndex = event.logIndex;
   request.disputeHash = event.transaction.hash;
+  request.lastUpdated = event.block.timestamp;
 
   request.state = getState<DisputePriceRequestStruct>(
     event.address,
@@ -222,6 +225,7 @@ export function handleOptimisticSettle(event: Settle): void {
   request.settlementBlockNumber = event.block.number;
   request.settlementLogIndex = event.logIndex;
   request.settlementHash = event.transaction.hash;
+  request.lastUpdated = event.block.timestamp;
 
   request.state = getState<SettleRequestStruct>(
     event.address,