diff --git a/apis/config/deposit_contract.yaml b/apis/config/deposit_contract.yaml
index 2489f503..3390f1ee 100644
--- a/apis/config/deposit_contract.yaml
+++ b/apis/config/deposit_contract.yaml
@@ -25,8 +25,8 @@ get:
                       - example: "1"
                   address:
                     allOf:
-                      - $ref: ../../beacon-node-oapi.yaml#/components/schemas/Hex
+                      - $ref: ../../beacon-node-oapi.yaml#/components/schemas/ExecutionAddress
                       - description: Hex encoded deposit contract address with 0x prefix
-                      - example: "0x1Db3439a222C519ab44bb1144fC28167b4Fa6EE6"
+                      - example: "0x00000000219ab540356cBB839Cbe05303d7705Fa"
     "500":
       $ref: ../../beacon-node-oapi.yaml#/components/responses/InternalError
diff --git a/beacon-node-oapi.yaml b/beacon-node-oapi.yaml
index 09597aba..ba3f5ae4 100644
--- a/beacon-node-oapi.yaml
+++ b/beacon-node-oapi.yaml
@@ -283,8 +283,6 @@ components:
       $ref: './types/primitive.yaml#/Finalized'
     Root:
       $ref: './types/primitive.yaml#/Root'
-    Hex:
-      $ref: './types/primitive.yaml#/Hex'
     Graffiti:
       $ref: './types/primitive.yaml#/Graffiti'
     Signature:
diff --git a/types/altair/sync_committee.yaml b/types/altair/sync_committee.yaml
index 5a166d39..f08fcb34 100644
--- a/types/altair/sync_committee.yaml
+++ b/types/altair/sync_committee.yaml
@@ -81,8 +81,8 @@ Altair:
       aggregation_bits:
         allOf:
           - description: 'A bit is set if a signature from the validator at the corresponding index in the subcommittee is present in the aggregate `signature`.'
-          - $ref: "../primitive.yaml#/Hex"
-          - example: "0x01"
+          - $ref: "../primitive.yaml#/Bitvector"
+          - example: "0xffffffffffffffffffffffffffffffff"
       signature:
         allOf:
           - $ref: '../primitive.yaml#/Signature'
diff --git a/types/p2p.yaml b/types/p2p.yaml
index 3859ccb6..69e5d3a9 100644
--- a/types/p2p.yaml
+++ b/types/p2p.yaml
@@ -34,12 +34,12 @@ MetaData:
     attnets:
       allOf:
         - description: "Bitvector representing the node's persistent attestation subnet subscriptions."
-        - $ref: "./primitive.yaml#/Hex"
+        - $ref: "./primitive.yaml#/Bitvector"
         - example: "0x0000000000000000"
     syncnets:
       allOf:
         - description: "Bitvector representing the node's sync committee subnet subscriptions. This metadata is not present in phase0, but will be present in Altair."
-        - $ref: "./primitive.yaml#/Hex"
+        - $ref: "./primitive.yaml#/Bitvector"
         - example: "0x0f"
 
 Peer:
diff --git a/types/primitive.yaml b/types/primitive.yaml
index 1ecf3f5a..5deda884 100644
--- a/types/primitive.yaml
+++ b/types/primitive.yaml
@@ -76,11 +76,6 @@ Graffiti:
   example: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
   pattern: "^0x[a-fA-F0-9]{64}$"
 
-Hex:
-  type: string
-  format: hex
-  pattern: "^0x[a-fA-F0-9]{2,}$"
-
 Signature:
   type: string
   format: hex
@@ -91,7 +86,13 @@ BitList:
   type: string
   format: hex
   example: "0x01"
-  pattern: "^0x[a-fA-F0-9]+$"
+  pattern: "^0x[a-fA-F0-9]{2,64}$"
+
+Bitvector:
+  type: string
+  format: hex
+  example: "0x01"
+  pattern: "^0x[a-fA-F0-9]{2,64}$"
 
 Uint8:
   type: string