diff --git a/apis/beacon/blocks/attestations.yaml b/apis/beacon/blocks/attestations.yaml
index 7bf1e089..ab968268 100644
--- a/apis/beacon/blocks/attestations.yaml
+++ b/apis/beacon/blocks/attestations.yaml
@@ -13,6 +13,9 @@ get:
   responses:
     "200":
       description: Success
+      headers:
+        Eth-Consensus-Version:
+          $ref: '../../../beacon-node-oapi.yaml#/components/headers/Eth-Consensus-Version'
       content:
         application/json:
           schema:
@@ -27,7 +30,9 @@ get:
               data:
                 type: array
                 items:
-                  $ref: '../../../beacon-node-oapi.yaml#/components/schemas/Attestation'
+                  oneOf:
+                    - $ref: '../../../beacon-node-oapi.yaml#/components/schemas/Attestation'
+                    - $ref: '../../../beacon-node-oapi.yaml#/components/schemas/Electra.Attestation'
     "400":
       description: "The block ID supplied could not be parsed"
       content:
diff --git a/apis/beacon/pool/attestations.yaml b/apis/beacon/pool/attestations.yaml
index 1748b42f..83a37fdf 100644
--- a/apis/beacon/pool/attestations.yaml
+++ b/apis/beacon/pool/attestations.yaml
@@ -18,6 +18,9 @@ get:
   responses:
     "200":
       description: Successful response
+      headers:
+        Eth-Consensus-Version:
+          $ref: '../../../beacon-node-oapi.yaml#/components/headers/Eth-Consensus-Version'
       content:
         application/json:
           schema:
@@ -28,7 +31,9 @@ get:
               data:
                 type: array
                 items:
-                  $ref: '../../../beacon-node-oapi.yaml#/components/schemas/Attestation'
+                  oneOf:
+                    - $ref: '../../../beacon-node-oapi.yaml#/components/schemas/Attestation'
+                    - $ref: '../../../beacon-node-oapi.yaml#/components/schemas/Electra.Attestation'
     "400":
       description: "The slot or committee index could not be parsed"
       content:
diff --git a/apis/beacon/pool/attester_slashings.yaml b/apis/beacon/pool/attester_slashings.yaml
index f21591c8..545d7265 100644
--- a/apis/beacon/pool/attester_slashings.yaml
+++ b/apis/beacon/pool/attester_slashings.yaml
@@ -7,6 +7,9 @@ get:
   responses:
     "200":
       description: Successful response
+      headers:
+        Eth-Consensus-Version:
+          $ref: '../../../beacon-node-oapi.yaml#/components/headers/Eth-Consensus-Version'
       content:
         application/json:
           schema:
@@ -17,7 +20,9 @@ get:
               data:
                 type: array
                 items:
-                  $ref: '../../../beacon-node-oapi.yaml#/components/schemas/AttesterSlashing'
+                  oneOf:
+                    - $ref: '../../../beacon-node-oapi.yaml#/components/schemas/AttesterSlashing'
+                    - $ref: '../../../beacon-node-oapi.yaml#/components/schemas/Electra.AttesterSlashing'
     "500":
       $ref: '../../../beacon-node-oapi.yaml#/components/responses/InternalError'
 
@@ -32,7 +37,9 @@ post:
     content:
       application/json:
         schema:
-          $ref: '../../../beacon-node-oapi.yaml#/components/schemas/AttesterSlashing'
+          oneOf:
+           - $ref: '../../../beacon-node-oapi.yaml#/components/schemas/AttesterSlashing'
+           - $ref: '../../../beacon-node-oapi.yaml#/components/schemas/Electra.AttesterSlashing'
   responses:
     "200":
       description: Success
diff --git a/beacon-node-oapi.yaml b/beacon-node-oapi.yaml
index b9640ae3..d4480008 100644
--- a/beacon-node-oapi.yaml
+++ b/beacon-node-oapi.yaml
@@ -229,6 +229,8 @@ components:
       $ref: './types/api.yaml#/Committee'
     AttesterSlashing:
       $ref: './types/attester_slashing.yaml#/AttesterSlashing'
+    Electra.AttesterSlashing:
+      $ref: './types/electra/attester_slashing.yaml#/Electra/AttesterSlashing'
     ProposerSlashing:
       $ref: './types/proposer_slashing.yaml#/ProposerSlashing'
     SignedVoluntaryExit:
@@ -245,8 +247,10 @@ components:
       $ref: './types/validator.yaml#/SignedAggregateAndProof'
     Attestation:
       $ref: './types/attestation.yaml#/Attestation'
+    Electra.Attestation:
+      $ref: './types/electra/attestation.yaml#/Electra/Attestation'
     AttestationData:
-      $ref: './types/attestation.yaml#/AttestationData'
+      $ref: './types/attestation_data.yaml#/AttestationData'
     BeaconCommitteeSelection:
       $ref: './types/selection.yaml#/BeaconCommitteeSelection'
     SyncCommitteeSelection:
@@ -329,7 +333,7 @@ components:
       $ref: './types/bellatrix/block.yaml#/Bellatrix/SignedBlindedBeaconBlock'
     ConsensusVersion:
       type: string
-      enum: [phase0, altair, bellatrix, capella, deneb]
+      enum: [phase0, altair, bellatrix, capella, deneb, electra]
       example: "phase0"
     SignedValidatorRegistration:
       $ref: './types/registration.yaml#/SignedValidatorRegistration'
diff --git a/types/attestation.yaml b/types/attestation.yaml
index 747e0e37..a71b07b6 100644
--- a/types/attestation.yaml
+++ b/types/attestation.yaml
@@ -12,7 +12,7 @@ IndexedAttestation:
       $ref: './primitive.yaml#/Signature'
       description: "The BLS signature of the `IndexedAttestation`, created by the validator of the attestation."
     data:
-      $ref: './attestation.yaml#/AttestationData'
+      $ref: './attestation_data.yaml#/AttestationData'
 
 Attestation:
   type: object
@@ -26,7 +26,7 @@ Attestation:
       $ref: './primitive.yaml#/Signature'
       description: "BLS aggregate signature."
     data:
-      $ref: './attestation.yaml#/AttestationData'
+      $ref: './attestation_data.yaml#/AttestationData'
 
 PendingAttestation:
   type: object
@@ -37,25 +37,8 @@ PendingAttestation:
       $ref: "./primitive.yaml#/BitList"
       description: "Attester aggregation bits."
     data:
-      $ref: '#/AttestationData'
+      $ref: './attestation_data.yaml#/AttestationData'
     inclusion_delay:
       $ref: "./primitive.yaml#/Uint64"
     proposer_index:
-      $ref: "./primitive.yaml#/Uint64"
-
-AttestationData:
-  type: object
-  description: "The [`AttestationData`](https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/phase0/beacon-chain.md#attestationdata) object from the CL spec."
-  required: [slot, index, beacon_block_root, source, target]
-  properties:
-    slot:
-      $ref: "./primitive.yaml#/Uint64"
-    index:
-      $ref: "./primitive.yaml#/Uint64"
-    beacon_block_root:
-      $ref: './primitive.yaml#/Root'
-      description: "LMD GHOST vote."
-    source:
-      $ref: "./misc.yaml#/Checkpoint"
-    target:
-      $ref: "./misc.yaml#/Checkpoint"
+      $ref: "./primitive.yaml#/Uint64"
\ No newline at end of file
diff --git a/types/attestation_data.yaml b/types/attestation_data.yaml
new file mode 100644
index 00000000..d8e42d3f
--- /dev/null
+++ b/types/attestation_data.yaml
@@ -0,0 +1,16 @@
+AttestationData:
+  type: object
+  description: "The [`AttestationData`](https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/phase0/beacon-chain.md#attestationdata) object from the CL spec."
+  required: [slot, index, beacon_block_root, source, target]
+  properties:
+    slot:
+      $ref: "./primitive.yaml#/Uint64"
+    index:
+      $ref: "./primitive.yaml#/Uint64"
+    beacon_block_root:
+      $ref: './primitive.yaml#/Root'
+      description: "LMD GHOST vote."
+    source:
+      $ref: "./misc.yaml#/Checkpoint"
+    target:
+      $ref: "./misc.yaml#/Checkpoint"
\ No newline at end of file
diff --git a/types/electra/attestation.yaml b/types/electra/attestation.yaml
new file mode 100644
index 00000000..492fb182
--- /dev/null
+++ b/types/electra/attestation.yaml
@@ -0,0 +1,33 @@
+Electra:
+  IndexedAttestation:
+    type: object
+    description: "The [`IndexedAttestation`](https://github.com/ethereum/consensus-specs/blob/dev/specs/electra/beacon-chain.md#indexedattestation) object from the CL spec."
+    properties:
+      attesting_indices:
+        type: array
+        maxItems: 131072
+        description: "Attesting validator indices"
+        items:
+          $ref: "../primitive.yaml#/Uint64"
+      signature:
+        $ref: '../primitive.yaml#/Signature'
+        description: "The BLS signature of the `IndexedAttestation`, created by the validator of the attestation."
+      data:
+        $ref: '../attestation_data.yaml#/AttestationData'
+
+  Attestation:
+    type: object
+    description: "The [`Attestation`](https://github.com/ethereum/consensus-specs/blob/dev/specs/electra/beacon-chain.md#attestation) object from the CL spec."
+    required: [aggregation_bits, signature, data]
+    properties:
+      aggregation_bits:
+        $ref: "../primitive.yaml#/BitList"
+        description: "Attester aggregation bits."
+      data:
+        $ref: '../attestation_data.yaml#/AttestationData'
+      committee_bits:
+        $ref: "../primitive.yaml#/Bitvector"
+        description: "Attester aggregation bits."
+      signature:
+        $ref: '../primitive.yaml#/Signature'
+        description: "BLS aggregate signature."
\ No newline at end of file
diff --git a/types/electra/attester_slashing.yaml b/types/electra/attester_slashing.yaml
new file mode 100644
index 00000000..21e51b6b
--- /dev/null
+++ b/types/electra/attester_slashing.yaml
@@ -0,0 +1,10 @@
+Electra:
+  AttesterSlashing:
+    type: object
+    description: "The [`AttesterSlashing`](https://github.com/ethereum/consensus-specs/blob/dev/specs/electra/beacon-chain.md#attesterslashing) object from the CL spec."
+    required: [attestation_1, attestation_2]
+    properties:
+      attestation_1:
+        $ref: './attestation.yaml#/Electra/IndexedAttestation'
+      attestation_2:
+        $ref: './attestation.yaml#/Electra/IndexedAttestation'