diff --git a/query-node/mappings/src/proposals.ts b/query-node/mappings/src/proposals.ts
index 47b9472ad5..7e7d3b242f 100644
--- a/query-node/mappings/src/proposals.ts
+++ b/query-node/mappings/src/proposals.ts
@@ -62,6 +62,7 @@ import {
   VetoProposalDetails,
   DecreaseCouncilBudgetProposalDetails,
   UpdateTokenPalletTokenConstraintsProposalDetails,
+  SetEraPayoutDampingFactorProposalDetails,
 } from 'query-node/dist/model'
 import {
   INT32MAX,
@@ -345,7 +346,12 @@ async function parseProposalDetails(
     details.ammBuyTxFees = unwrap(specificDetails.ammBuyTxFees)?.toNumber()
     details.ammSellTxFees = unwrap(specificDetails.ammSellTxFees)?.toNumber()
     details.bloatBond = whenDef(unwrap(specificDetails.bloatBond), asBN)
-
+    return details
+  }
+  // SetEraPayoutDampingFactorProposalDetails
+  else if (proposalDetails.isSetEraPayoutDampingFactor) {
+    const details = new SetEraPayoutDampingFactorProposalDetails()
+    details.dampingFactor = proposalDetails.asSetEraPayoutDampingFactor.toNumber()
     return details
   } else {
     unimplementedError(`Unsupported proposal details type: ${proposalDetails.type}`)
diff --git a/query-node/schemas/proposals.graphql b/query-node/schemas/proposals.graphql
index cbce2459e6..345a640844 100644
--- a/query-node/schemas/proposals.graphql
+++ b/query-node/schemas/proposals.graphql
@@ -381,6 +381,11 @@ type UpdateTokenPalletTokenConstraintsProposalDetails @variant {
   bloatBond: BigInt
 }
 
+type SetEraPayoutDampingFactorProposalDetails @variant {
+  "Proposed validator payout damping factor"
+  dampingFactor: Int!
+}
+
 union ProposalDetails =
     SignalProposalDetails
   | RuntimeUpgradeProposalDetails
@@ -408,3 +413,4 @@ union ProposalDetails =
   | UpdateGlobalNftLimitProposalDetails
   | DecreaseCouncilBudgetProposalDetails
   | UpdateTokenPalletTokenConstraintsProposalDetails
+  | SetEraPayoutDampingFactorProposalDetails