diff --git a/go.sum b/go.sum
index 78c40ef12..7b0de7875 100644
--- a/go.sum
+++ b/go.sum
@@ -1,3 +1,5 @@
+bou.ke/monkey v1.0.2 h1:kWcnsrCNUatbxncxR/ThdYqbytgOIArtYWqcQLQzKLI=
+bou.ke/monkey v1.0.2/go.mod h1:OqickVX3tNx6t33n1xvtTtu85YN5s6cKwVug+oHMaIA=
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
diff --git a/x/oracle/keeper/msg_server_create_price.go b/x/oracle/keeper/msg_server_create_price.go
index 78688e046..e41b429d7 100644
--- a/x/oracle/keeper/msg_server_create_price.go
+++ b/x/oracle/keeper/msg_server_create_price.go
@@ -22,8 +22,8 @@ func (ms msgServer) CreatePrice(goCtx context.Context, msg *types.MsgCreatePrice
 
 	ctx.EventManager().EmitEvent(sdk.NewEvent(
 		types.EventTypeCreatePrice,
-		sdk.NewAttribute(types.AttributeKeyFeederID, strconv.Itoa(int(msg.FeederID))),
-		sdk.NewAttribute(types.AttributeKeyBasedBlock, strconv.FormatInt(int64(msg.BasedBlock), 10)),
+		sdk.NewAttribute(types.AttributeKeyFeederID, strconv.FormatUint(msg.FeederID, 10)),
+		sdk.NewAttribute(types.AttributeKeyBasedBlock, strconv.FormatUint(msg.BasedBlock, 10)),
 		sdk.NewAttribute(types.AttributeKeyProposer, msg.Creator),
 	),
 	)
@@ -36,8 +36,8 @@ func (ms msgServer) CreatePrice(goCtx context.Context, msg *types.MsgCreatePrice
 
 			ctx.EventManager().EmitEvent(sdk.NewEvent(
 				types.EventTypeCreatePrice,
-				sdk.NewAttribute(types.AttributeKeyFeederID, strconv.Itoa(int(msg.FeederID))),
-				sdk.NewAttribute(types.AttributeKeyRoundID, strconv.FormatInt(int64(newItem.PriceTR.RoundID), 10)),
+				sdk.NewAttribute(types.AttributeKeyFeederID, strconv.FormatUint(msg.FeederID, 10)),
+				sdk.NewAttribute(types.AttributeKeyRoundID, strconv.FormatUint(newItem.PriceTR.RoundID, 10)),
 				sdk.NewAttribute(types.AttributeKeyFinalPrice, newItem.PriceTR.Price),
 				sdk.NewAttribute(types.AttributeKeyPriceUpdated, types.AttributeValuePriceUpdatedSuccess),
 			),
diff --git a/x/oracle/module.go b/x/oracle/module.go
index 6638310f7..ac5a376e3 100644
--- a/x/oracle/module.go
+++ b/x/oracle/module.go
@@ -182,7 +182,7 @@ func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.Val
 	for _, tokenID := range failed {
 		event := sdk.NewEvent(
 			types.EventTypeCreatePrice,
-			sdk.NewAttribute(types.AttributeKeyTokenID, strconv.Itoa(int(tokenID))),
+			sdk.NewAttribute(types.AttributeKeyTokenID, strconv.FormatUint(tokenID, 10)),
 			sdk.NewAttribute(types.AttributeKeyPriceUpdated, types.AttributeValuePriceUpdatedFail),
 		)
 		logInfo := fmt.Sprintf("add new round with previous price under fail aggregation, tokenID:%d", tokenID)
@@ -192,7 +192,7 @@ func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.Val
 			logger.Info("add new round with previous price under fail aggregation", "tokenID", tokenID, "roundID", pTR.RoundID)
 			logInfo += fmt.Sprintf(", roundID:%d, price:%s", pTR.RoundID, pTR.Price)
 			event.AppendAttributes(
-				sdk.NewAttribute(types.AttributeKeyRoundID, strconv.Itoa(int(pTR.RoundID))),
+				sdk.NewAttribute(types.AttributeKeyRoundID, strconv.FormatUint(pTR.RoundID, 10)),
 				sdk.NewAttribute(types.AttributeKeyFinalPrice, pTR.Price),
 			)
 		} else {
@@ -202,7 +202,7 @@ func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.Val
 			})
 			logInfo += fmt.Sprintf(", roundID:%d, price:-", nextRoundID)
 			event.AppendAttributes(
-				sdk.NewAttribute(types.AttributeKeyRoundID, strconv.Itoa(int(nextRoundID))),
+				sdk.NewAttribute(types.AttributeKeyRoundID, strconv.FormatUint(nextRoundID, 10)),
 				sdk.NewAttribute(types.AttributeKeyFinalPrice, "-"),
 			)
 		}