diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 764343b..298d8c8 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -2,10 +2,12 @@ version: 2
 updates:
   - package-ecosystem: "npm"
     directory: "/"
+    target-branch: "develop"
     schedule:
       interval: "weekly"
 
   - package-ecosystem: "pip"
     directory: "/scripts/"
+    target-branch: "develop"
     schedule:
       interval: "weekly"
diff --git a/contracts/IMessageProxy.sol b/contracts/IMessageProxy.sol
index 83ba0e4..03c0109 100644
--- a/contracts/IMessageProxy.sol
+++ b/contracts/IMessageProxy.sol
@@ -80,4 +80,5 @@ interface IMessageProxy {
     function getOutgoingMessagesCounter(string calldata targetSchainName) external view returns (uint256);
     function getIncomingMessagesCounter(string calldata fromSchainName) external view returns (uint256);
     function isConnectedChain(string memory schainName) external view returns (bool);
+    function getLastOutgoingMessageBlockId(string memory targetSchainName) external view returns (uint);
 }
\ No newline at end of file
diff --git a/contracts/mainnet/IMessageProxyForMainnet.sol b/contracts/mainnet/IMessageProxyForMainnet.sol
index e82c20f..d90bdf6 100644
--- a/contracts/mainnet/IMessageProxyForMainnet.sol
+++ b/contracts/mainnet/IMessageProxyForMainnet.sol
@@ -30,6 +30,18 @@ interface IMessageProxyForMainnet is IMessageProxy {
     function setNewMessageGasCost(uint256 newMessageGasCost) external;
     function pause(string calldata schainName) external;
     function resume(string calldata schainName) external;
+    function addReimbursedContract(string memory schainName, address reimbursedContract) external;
+    function removeReimbursedContract(string memory schainName, address reimbursedContract) external;
     function messageInProgress() external view returns (bool);
     function isPaused(bytes32 schainHash) external view returns (bool);
+    function isReimbursedContract(bytes32 schainHash, address contractAddress) external view returns (bool);
+    function getReimbursedContractsLength(bytes32 schainHash) external view returns (uint256);
+    function getReimbursedContractsRange(
+        bytes32 schainHash,
+        uint256 from,
+        uint256 to
+    )
+        external
+        view
+        returns (address[] memory contractsInRange);
 }
\ No newline at end of file
diff --git a/contracts/mainnet/ITwin.sol b/contracts/mainnet/ITwin.sol
index 9366545..28b3802 100644
--- a/contracts/mainnet/ITwin.sol
+++ b/contracts/mainnet/ITwin.sol
@@ -27,4 +27,5 @@ interface ITwin is ISkaleManagerClient {
     function addSchainContract(string calldata schainName, address contractReceiver) external;
     function removeSchainContract(string calldata schainName) external;
     function hasSchainContract(string calldata schainName) external view returns (bool);
+    function getSchainContract(bytes32 schainHash) external view returns (address);
 }
\ No newline at end of file
diff --git a/contracts/schain/ICommunityLocker.sol b/contracts/schain/ICommunityLocker.sol
index 0b50898..5fc14af 100644
--- a/contracts/schain/ICommunityLocker.sol
+++ b/contracts/schain/ICommunityLocker.sol
@@ -34,7 +34,7 @@ interface ICommunityLocker is IMessageReceiver {
         ITokenManagerLinker newTokenManagerLinker,
         address newCommunityPool
     ) external;
-    function checkAllowedToSendMessage(address receiver) external;
-    function setTimeLimitPerMessage(uint newTimeLimitPerMessage) external;
+    function checkAllowedToSendMessage(bytes32 chainHash, address receiver) external;
+    function setTimeLimitPerMessage(string memory chainName, uint newTimeLimitPerMessage) external;
     function setGasPrice(uint gasPrice, uint timestamp, IMessageProxyForSchain.Signature memory signature) external;
 }
\ No newline at end of file
diff --git a/contracts/schain/IMessageProxyForSchain.sol b/contracts/schain/IMessageProxyForSchain.sol
index 143b2c2..4b10365 100644
--- a/contracts/schain/IMessageProxyForSchain.sol
+++ b/contracts/schain/IMessageProxyForSchain.sol
@@ -23,6 +23,7 @@ pragma solidity >=0.6.10 <0.9.0;
 
 import "../IMessageProxy.sol";
 import "./IKeyStorage.sol";
+import "./ITokenManagerLinker.sol";
 
 interface IMessageProxyForSchain is IMessageProxy {
     struct OutgoingMessageData {
@@ -34,7 +35,9 @@ interface IMessageProxyForSchain is IMessageProxy {
     }
 
     function initialize(IKeyStorage blsKeyStorage, string memory schainName) external;
+    function setMinimumReceiverBalance(uint256 balance) external;
+    function topUpReceiverBalance(address payable receiver) external;
+    function messageInProgress() external view returns (bool);
     function verifyOutgoingMessageData(OutgoingMessageData memory message) external view returns (bool);
     function verifySignature(bytes32 hashedMessage, Signature memory signature) external view returns (bool);
-    function messageInProgress() external view returns (bool);
 }
\ No newline at end of file
diff --git a/contracts/schain/ITokenManagerLinker.sol b/contracts/schain/ITokenManagerLinker.sol
index 040b675..1610b31 100644
--- a/contracts/schain/ITokenManagerLinker.sol
+++ b/contracts/schain/ITokenManagerLinker.sol
@@ -26,11 +26,11 @@ import "./ITokenManager.sol";
 
 
 interface ITokenManagerLinker {
+    function connectSchain(string calldata schainName) external;
+    function disconnectSchain(string calldata schainName) external;
     function initialize(IMessageProxyForSchain newMessageProxyAddress, address linker) external;
     function registerTokenManager(ITokenManager newTokenManager) external;
     function removeTokenManager(ITokenManager tokenManagerAddress) external;
-    function connectSchain(string calldata schainName) external;
-    function disconnectSchain(string calldata schainName) external;
-    function hasTokenManager(ITokenManager tokenManager) external view returns (bool);
     function hasSchain(string calldata schainName) external view returns (bool connected);
+    function hasTokenManager(address tokenManager) external view returns (bool);
 }
\ No newline at end of file
diff --git a/package.json b/package.json
index f8c0403..f9e2154 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@skalenetwork/ima-interfaces",
-  "version": "1.1.0",
+  "version": "2.0.0",
   "description": "Definitions of interfaces needed to integrate with IMA smart contracts",
   "main": "index.js",
   "repository": "git@github.com:skalenetwork/ima-interfaces.git",