diff --git a/src/executor/executorManager.ts b/src/executor/executorManager.ts
index 9e5ed7e4..5544fd4f 100644
--- a/src/executor/executorManager.ts
+++ b/src/executor/executorManager.ts
@@ -428,7 +428,7 @@ export class ExecutorManager {
                     this.eventManager.emitIncludedOnChain(
                         userOperationHash,
                         status.hash,
-                        Number(status.transactionStatuses.blockTimeStamp) * 1000
+                        status.transactionStatuses.blockNumber as bigint
                     )
                     this.monitor.setUserOperationStatus(userOperationHash, {
                         status: "included",
@@ -457,7 +457,8 @@ export class ExecutorManager {
                 })
                 this.eventManager.emitFailedOnChain(
                     userOperationHash,
-                    status.hash
+                    status.hash,
+                    status.transactionStatuses.blockNumber as bigint
                 )
                 this.logger.info(
                     {
diff --git a/src/handlers/eventManager.ts b/src/handlers/eventManager.ts
index 18868c3b..5e5f13c7 100644
--- a/src/handlers/eventManager.ts
+++ b/src/handlers/eventManager.ts
@@ -30,23 +30,37 @@ export class EventManager {
     }
 
     // emits when the userOperation was mined onchain but failed
-    async emitFailedOnChain(userOperationHash: Hex, transactionHash: Hex) {
+    async emitFailedOnChain(
+        userOperationHash: Hex,
+        transactionHash: Hex,
+        blockNumber: bigint
+    ) {
         await this.emitEvent({
             userOperationHash,
             event: {
                 eventType: "failed_onchain",
-                transactionHash
+                transactionHash,
+                data: {
+                    blockNumber: Number(blockNumber)
+                }
             }
         })
     }
 
     // emits when the userOperation has been included onchain but bundled by a frontrunner
-    async emitFrontranOnChain(userOperationHash: Hex, transactionHash: Hex) {
+    async emitFrontranOnChain(
+        userOperationHash: Hex,
+        transactionHash: Hex,
+        blockNumber: bigint
+    ) {
         await this.emitEvent({
             userOperationHash,
             event: {
                 eventType: "frontran_onchain",
-                transactionHash
+                transactionHash,
+                data: {
+                    blockNumber: Number(blockNumber)
+                }
             }
         })
     }
@@ -55,15 +69,17 @@ export class EventManager {
     async emitIncludedOnChain(
         userOperationHash: Hex,
         transactionHash: Hex,
-        timestamp: number
+        blockNumber: bigint
     ) {
         await this.emitEvent({
             userOperationHash,
             event: {
                 eventType: "included_onchain",
-                transactionHash
-            },
-            timestamp
+                transactionHash,
+                data: {
+                    blockNumber: Number(blockNumber)
+                }
+            }
         })
     }
 
diff --git a/src/types/schemas.ts b/src/types/schemas.ts
index 22b12447..b9b64f5d 100644
--- a/src/types/schemas.ts
+++ b/src/types/schemas.ts
@@ -825,15 +825,24 @@ const OpEventType = z.union([
     }),
     z.object({
         eventType: z.literal("included_onchain"),
-        transactionHash: hexData32Schema
+        transactionHash: hexData32Schema,
+        data: z.object({
+            blockNumber: z.number()
+        })
     }),
     z.object({
         eventType: z.literal("frontran_onchain"),
-        transactionHash: hexData32Schema
+        transactionHash: hexData32Schema,
+        data: z.object({
+            blockNumber: z.number()
+        })
     }),
     z.object({
         eventType: z.literal("failed_onchain"),
-        transactionHash: hexData32Schema
+        transactionHash: hexData32Schema,
+        data: z.object({
+            blockNumber: z.number()
+        })
     })
 ])
 
diff --git a/src/utils/userop.ts b/src/utils/userop.ts
index b5c6e931..d3c738e7 100644
--- a/src/utils/userop.ts
+++ b/src/utils/userop.ts
@@ -196,14 +196,11 @@ export const transactionIncluded = async (
     [userOperationHash: HexData32]: {
         accountDeployed: boolean
     }
-    blockTimeStamp: bigint
+    blockNumber: bigint | undefined
 }> => {
     try {
         const rcp = await publicClient.getTransactionReceipt({ hash: txHash })
-        const block = await publicClient.getBlock({
-            blockHash: rcp.blockHash
-        })
-        const blockTimeStamp = block.timestamp
+        const blockNumber = rcp.blockNumber
 
         if (rcp.status === "success") {
             // find if any logs are UserOperationEvent or AccountDeployed
@@ -283,23 +280,23 @@ export const transactionIncluded = async (
             if (success) {
                 return {
                     status: "included",
-                    blockTimeStamp,
+                    blockNumber,
                     ...r
                 }
             }
             return {
                 status: "reverted",
-                blockTimeStamp
+                blockNumber
             }
         }
         return {
             status: "failed",
-            blockTimeStamp
+            blockNumber
         }
     } catch (_e) {
         return {
             status: "not_found",
-            blockTimeStamp: 0n
+            blockNumber: undefined
         }
     }
 }