diff --git a/beacon_chain/rpc/rest_constants.nim b/beacon_chain/rpc/rest_constants.nim
index e9186401f5..2a462b4b41 100644
--- a/beacon_chain/rpc/rest_constants.nim
+++ b/beacon_chain/rpc/rest_constants.nim
@@ -87,9 +87,6 @@ const
     "Invalid attestation data root value"
   UnableToGetAggregatedAttestationError* =
     "Unable to retrieve an aggregated attestation"
-  DeprecatedGetAggregatedAttestation*: string =
-    "Deprecated endpoint /eth/v1/validator/aggregate_attestation. Replaced with" &
-    "https://ethereum.github.io/beacon-APIs/#/Validator/getAggregatedAttestationV2"
   MissingRandaoRevealValue* =
     "Missing `randao_reveal` value"
   InvalidRandaoRevealValue* =
diff --git a/beacon_chain/rpc/rest_validator_api.nim b/beacon_chain/rpc/rest_validator_api.nim
index f0d8414bd5..087db88536 100644
--- a/beacon_chain/rpc/rest_validator_api.nim
+++ b/beacon_chain/rpc/rest_validator_api.nim
@@ -771,46 +771,6 @@ proc installValidatorApiHandlers*(router: var RestRouter, node: BeaconNode) =
         makeAttestationData(epochRef, qhead.atSlot(qslot), qindex)
     RestApiResponse.jsonResponse(adata)
 
-  # https://ethereum.github.io/beacon-APIs/#/Validator/getAggregatedAttestation
-  router.api2(MethodGet, "/eth/v1/validator/aggregate_attestation") do (
-    attestation_data_root: Option[Eth2Digest],
-    slot: Option[Slot]) -> RestApiResponse:
-
-    let attestation =
-      block:
-        let qslot =
-          block:
-            if slot.isNone():
-              return RestApiResponse.jsonError(Http400, MissingSlotValueError)
-            let res = slot.get()
-            if res.isErr():
-              return RestApiResponse.jsonError(Http400, InvalidSlotValueError,
-                                               $res.error())
-            res.get()
-        let qroot =
-          block:
-            if attestation_data_root.isNone():
-              return RestApiResponse.jsonError(Http400,
-                                           MissingAttestationDataRootValueError)
-            let res = attestation_data_root.get()
-            if res.isErr():
-              return RestApiResponse.jsonError(Http400,
-                             InvalidAttestationDataRootValueError, $res.error())
-            res.get()
-        let res =
-          block:
-            let contextFork = node.dag.cfg.consensusForkAtEpoch(epoch(qslot))
-            if contextFork >= ConsensusFork.Electra:
-              return RestApiResponse.jsonError(Http410,
-                             DeprecatedGetAggregatedAttestation)
-
-            node.attestationPool[].getAggregatedAttestation(qslot, qroot)
-        if res.isNone():
-          return RestApiResponse.jsonError(Http400,
-                                          UnableToGetAggregatedAttestationError)
-        res.get()
-    RestApiResponse.jsonResponse(attestation)
-
   # https://ethereum.github.io/beacon-APIs/#/Validator/getAggregatedAttestationV2
   router.api2(MethodGet, "/eth/v2/validator/aggregate_attestation") do (
     attestation_data_root: Option[Eth2Digest],
@@ -852,11 +812,10 @@ proc installValidatorApiHandlers*(router: var RestRouter, node: BeaconNode) =
         let res =
           block:
             let contextFork = node.dag.cfg.consensusForkAtEpoch(epoch(qslot))
-            if contextFork < ConsensusFork.Electra:
-              return RestApiResponse.jsonError(Http400,
-                             UnableToGetAggregatedAttestationError)
-
-            node.attestationPool[].getElectraAggregatedAttestation(qslot, root, committee_index)
+            if contextFork >= ConsensusFork.Electra:
+              node.attestationPool[].getElectraAggregatedAttestation(qslot, root, committee_index)
+            else:
+              node.attestationPool[].getAggregatedAttestation(qslot, root)
         if res.isNone():
           return RestApiResponse.jsonError(Http400,
                                           UnableToGetAggregatedAttestationError)
diff --git a/beacon_chain/spec/eth2_apis/rest_validator_calls.nim b/beacon_chain/spec/eth2_apis/rest_validator_calls.nim
index 0672615d21..9704f42656 100644
--- a/beacon_chain/spec/eth2_apis/rest_validator_calls.nim
+++ b/beacon_chain/spec/eth2_apis/rest_validator_calls.nim
@@ -63,14 +63,6 @@ proc produceAttestationDataPlain*(
      meth: MethodGet.}
   ## https://ethereum.github.io/beacon-APIs/#/Validator/produceAttestationData
 
-proc getAggregatedAttestationPlain*(
-       attestation_data_root: Eth2Digest,
-       slot: Slot
-     ): RestPlainResponse {.
-     rest, endpoint: "/eth/v1/validator/aggregate_attestation"
-     meth: MethodGet.}
-  ## https://ethereum.github.io/beacon-APIs/#/Validator/getAggregatedAttestation
-
 proc getAggregatedAttestationPlainV2*(
        attestation_data_root: Eth2Digest,
        slot: Slot,
@@ -78,7 +70,7 @@ proc getAggregatedAttestationPlainV2*(
      ): RestPlainResponse {.
      rest, endpoint: "/eth/v2/validator/aggregate_attestation"
      meth: MethodGet.}
-  ## https://ethereum.github.io/beacon-APIs/#/Validator/getAggregatedAttestation
+  ## https://ethereum.github.io/beacon-APIs/?urls.primaryName=dev#/Beacon/getPoolAttestationsV2
 
 proc publishAggregateAndProofs*(
        body: seq[phase0.SignedAggregateAndProof]
diff --git a/beacon_chain/validator_client/api.nim b/beacon_chain/validator_client/api.nim
index d02254aae2..4f2c589394 100644
--- a/beacon_chain/validator_client/api.nim
+++ b/beacon_chain/validator_client/api.nim
@@ -1662,6 +1662,7 @@ proc submitPoolSyncCommitteeSignature*(
 proc getAggregatedAttestation*(
        vc: ValidatorClientRef,
        slot: Slot,
+       committee_index: CommitteeIndex,
        root: Eth2Digest,
        strategy: ApiStrategyKind
      ): Future[phase0.Attestation] {.async.} =
@@ -1678,7 +1679,7 @@ proc getAggregatedAttestation*(
       OneThirdDuration,
       ViableNodeStatus,
       {BeaconNodeRole.AggregatedData},
-      getAggregatedAttestationPlain(it, root, slot)):
+      getAggregatedAttestationPlainV2(it, root, slot, committee_index)):
       if apiResponse.isErr():
         handleCommunicationError()
         ApiResponse[GetAggregatedAttestationResponse].err(apiResponse.error)
@@ -1718,7 +1719,7 @@ proc getAggregatedAttestation*(
       OneThirdDuration,
       ViableNodeStatus,
       {BeaconNodeRole.AggregatedData},
-      getAggregatedAttestationPlain(it, root, slot),
+      getAggregatedAttestationPlainV2(it, root, slot, committee_index),
       getAggregatedAttestationDataScore(itresponse)):
       if apiResponse.isErr():
         handleCommunicationError()
@@ -1764,7 +1765,7 @@ proc getAggregatedAttestation*(
       OneThirdDuration,
       ViableNodeStatus,
       {BeaconNodeRole.AggregatedData},
-      getAggregatedAttestationPlain(it, root, slot)):
+      getAggregatedAttestationPlainV2(it, root, slot, committee_index)):
       if apiResponse.isErr():
         handleCommunicationError()
         false
diff --git a/beacon_chain/validator_client/attestation_service.nim b/beacon_chain/validator_client/attestation_service.nim
index 33feb85dd4..fd3be30d59 100644
--- a/beacon_chain/validator_client/attestation_service.nim
+++ b/beacon_chain/validator_client/attestation_service.nim
@@ -281,6 +281,7 @@ proc produceAndPublishAggregates(service: AttestationServiceRef,
     let aggAttestation =
       try:
         await vc.getAggregatedAttestation(slot, attestationRoot,
+                                          committeeIndex,
                                           ApiStrategyKind.Best)
       except ValidatorApiError as exc:
         warn "Unable to get aggregated attestation data", slot = slot,
diff --git a/ncli/resttest-rules.json b/ncli/resttest-rules.json
index 071a8c38bf..a8560c342d 100644
--- a/ncli/resttest-rules.json
+++ b/ncli/resttest-rules.json
@@ -4477,52 +4477,6 @@
       "body": [{"operator": "jstructcmpns", "value": {"code": 400, "message": ""}}]
     }
   },
-  {
-    "topics": ["validator", "aggregate_attestation"],
-    "request": {
-      "url": "/eth/v1/validator/aggregate_attestation",
-      "headers": {"Accept": "application/json"}
-    },
-    "response": {
-      "status": {"operator": "equals", "value": "400"},
-      "headers": [{"key": "Content-Type", "value": "application/json", "operator": "equals"}],
-      "body": [{"operator": "jstructcmpns", "value": {"code": 400, "message": ""}}]
-    }
-  },
-    {
-    "topics": ["validator", "aggregate_attestation"],
-    "request": {
-      "url": "/eth/v1/validator/aggregate_attestation?slot=0",
-      "headers": {"Accept": "application/json"}
-    },
-    "response": {
-      "status": {"operator": "equals", "value": "400"},
-      "headers": [{"key": "Content-Type", "value": "application/json", "operator": "equals"}],
-      "body": [{"operator": "jstructcmpns", "value": {"code": 400, "message": ""}}]
-    }
-  },
-  {
-    "topics": ["validator", "aggregate_attestation"],
-    "request": {
-      "url": "/eth/v1/validator/aggregate_attestation?slot=&attestation_data_root=",
-      "headers": {"Accept": "application/json"}
-    },
-    "response": {
-      "status": {"operator": "equals", "value": "400"},
-      "headers": [{"key": "Content-Type", "value": "application/json", "operator": "equals"}],
-      "body": [{"operator": "jstructcmpns", "value": {"code": 400, "message": ""}}]
-    }
-  },
-  {
-    "topics": ["validator", "aggregate_attestation"],
-    "request": {
-      "url": "/eth/v1/validator/aggregate_attestation?slot=0&attestation_data_root=0x0000000000000000000000000000000000000000000000000000000000000000",
-      "headers": {"Accept": "application/json"}
-    },
-    "response": {
-      "status": {"operator": "oneof", "value": ["400", "200"]}
-    }
-  },
   {
     "topics": ["validator", "aggregate_attestation"],
     "request": {