diff --git a/specifications/api/swagger.yaml b/specifications/api/swagger.yaml
index dc9c54802c8..bd3634535f0 100644
--- a/specifications/api/swagger.yaml
+++ b/specifications/api/swagger.yaml
@@ -399,6 +399,20 @@ x-stakePoolId: &stakePoolId
   example: pool1wqaz0q0zhtxlgn0ewssevn2mrtm30fgh2g7hr7z9rj5856457mm
   description: A unique identifier for the pool.
 
+x-drepKeyHash: &drepKeyHash
+  type: string
+  format: bech32
+  example: drep1wqaz0q0zhtxlgn0ewssevn2mrtm30fgh2g7hr7z9rj5856457mm
+  description: DRep's key hash.
+  pattern: "^(drep)1[0-9a-z]*$"
+
+x-drepScriptHash: &drepScriptHash
+  type: string
+  format: bech32
+  example: drep_script1wqaz0q0zhtxlgn0ewssevn2mrtm30fgh2g7hr7z9rj5856457mm
+  description: DRep's script hash.
+  pattern: "^(drep_script)1[0-9a-z]*$"
+
 x-walletAccountXPubkey: &walletAccountXPubkey
   description: An extended account public key (public key + chain code)
   type: string
@@ -2949,13 +2963,6 @@ components:
       description: |
         The result of signing a transaction (serialized and encoded).
 
-    ApiDrepID: &ApiDrepID
-      type: string
-      format: bech32
-      example: drep1wqaz0q0zhtxlgn0ewssevn2mrtm30fgh2g7hr7z9rj5856457mm
-      description: DRep's key/script hash in accordance to CIP-0129.
-      pattern: "^(drep)1[0-9a-z]*$"
-
     ApiDRep: &ApiDRep
       description: |
         Decentralized representative (DRep)
@@ -2970,8 +2977,10 @@ components:
             - abstain
             - no_confidence
           title: casting a default vote
-        - <<: *ApiDrepID
-          title: vote to a drep represented by key/script hash
+        - <<: *drepKeyHash
+          title: vote to a drep represented by key hash
+        - <<: *drepScriptHash
+          title: vote to a drep represented by script hash
 
     ApiWalletDelegationNext: &ApiWalletDelegationNext
       type: object