diff --git a/contracts/INodes.sol b/contracts/INodes.sol
index 680ef4a..6cee352 100644
--- a/contracts/INodes.sol
+++ b/contracts/INodes.sol
@@ -60,7 +60,12 @@ interface INodes {
         uint16 nonce;
         string domainName;
     }
-    
+
+    // struct for storing additional fields for Node
+    struct NodeExtras {
+       uint lastChangeIpTime;
+    }
+
     /**
      * @dev Emitted when a node is created.
      */
@@ -163,4 +168,5 @@ interface INodes {
     function isNodeExist(address from, uint nodeIndex) external view returns (bool);
     function isNodeActive(uint nodeIndex) external view returns (bool);
     function isNodeLeaving(uint nodeIndex) external view returns (bool);
+    function getLastChangeIpTime(uint nodeIndex) external view returns (uint);
 }
diff --git a/contracts/ISkaleDKG.sol b/contracts/ISkaleDKG.sol
index 494e9f5..dbc9f03 100644
--- a/contracts/ISkaleDKG.sol
+++ b/contracts/ISkaleDKG.sol
@@ -121,7 +121,8 @@ interface ISkaleDKG {
         bytes32 schainHash,
         uint nodeIndex,
         G2Point[] memory verificationVector,
-        KeyShare[] memory secretKeyContribution
+        KeyShare[] memory secretKeyContribution,
+        uint rotationCounter
     )
         external;
     function complaintBadData(bytes32 schainHash, uint fromNodeIndex, uint toNodeIndex) external;
diff --git a/package.json b/package.json
index 58d4393..d334ddb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@skalenetwork/skale-manager-interfaces",
-  "version": "2.1.0",
+  "version": "3.0.0",
   "description": "Definitions of interfaces needed to integrate with skale-manager smart contracts",
   "main": "index.js",
   "repository": "git@github.com:skalenetwork/skale-manager-interfaces.git",