diff --git a/contracts/api3-server-v1/Api3ServerV1OevExtension.sol b/contracts/api3-server-v1/Api3ServerV1OevExtension.sol
index 8732512..8f18ce1 100644
--- a/contracts/api3-server-v1/Api3ServerV1OevExtension.sol
+++ b/contracts/api3-server-v1/Api3ServerV1OevExtension.sol
@@ -153,6 +153,7 @@ contract Api3ServerV1OevExtension is
         );
         emit UpdatedDappOevDataFeed(
             dappId,
+            msg.sender,
             baseDataFeedId,
             updatedValue,
             updatedTimestamp
diff --git a/contracts/api3-server-v1/interfaces/IApi3ServerV1OevExtension.sol b/contracts/api3-server-v1/interfaces/IApi3ServerV1OevExtension.sol
index 2e20979..1b5f85f 100644
--- a/contracts/api3-server-v1/interfaces/IApi3ServerV1OevExtension.sol
+++ b/contracts/api3-server-v1/interfaces/IApi3ServerV1OevExtension.sol
@@ -12,7 +12,7 @@ interface IApi3ServerV1OevExtension is
 
     event PaidOevBid(
         uint256 indexed dappId,
-        address updater,
+        address indexed updater,
         uint256 bidAmount,
         uint256 updateAllowanceEndTimestamp,
         address auctioneer
@@ -20,6 +20,7 @@ interface IApi3ServerV1OevExtension is
 
     event UpdatedDappOevDataFeed(
         uint256 indexed dappId,
+        address indexed updater,
         bytes32 dataFeedId,
         int224 updatedValue,
         uint32 updatedTimestamp