diff --git a/contracts/mainnet/connectors/crv_USD/helpers.sol b/contracts/mainnet/connectors/crv_USD/helpers.sol
index c0d439c6..0493c6a2 100644
--- a/contracts/mainnet/connectors/crv_USD/helpers.sol
+++ b/contracts/mainnet/connectors/crv_USD/helpers.sol
@@ -17,7 +17,7 @@ abstract contract Helpers is DSMath, Basic {
     /**
      * @dev Get controller address by given collateral asset
      */
-    function getController(address collateral) internal view returns(IController controller) {
-        controller = IController(ctrFactory.get_controller(collateral, 0));
+    function getController(address collateral, uint256 i) internal view returns(IController controller) {
+        controller = IController(ctrFactory.get_controller(collateral, i));
     }
 }
\ No newline at end of file
diff --git a/contracts/mainnet/connectors/crv_USD/main.sol b/contracts/mainnet/connectors/crv_USD/main.sol
index 9b28857e..92e142a7 100644
--- a/contracts/mainnet/connectors/crv_USD/main.sol
+++ b/contracts/mainnet/connectors/crv_USD/main.sol
@@ -15,18 +15,20 @@ abstract contract MakerResolver is Helpers, Events {
     /**
      * @dev Create loan
      * @param collateral collateral token address
+     * @param version   controller version
      * @param amt Amount of collateral to use
      * @param debt Stablecoin debt to take
      * @param N Number of bands to deposit into (to do autoliquidation-deliquidation), can be from MIN_TICKS(4) to MAX_TICKS(50)
     */
     function createLoan(
-        address collateral, 
+        address collateral,
+        uint256 version,
         uint256 amt,
         uint256 debt, 
         uint256 N
     ) external returns (string memory _eventName, bytes memory _eventParam) {
         address _collateral = collateral == ethAddr ? wethAddr : collateral;
-        IController controller = getController(_collateral);
+        IController controller = getController(_collateral, version);
         uint256 _amt = amt;
 
         uint256 ethAmt;
@@ -50,18 +52,20 @@ abstract contract MakerResolver is Helpers, Events {
      * @dev Add collateral
      * @notice Add extra collateral to avoid bad liqidations
      * @param collateral collateral asset address
+     * @param version   controller version
      * @param amt Amount of collateral to add
      * @param getId ID to retrieve amt.
      * @param setId ID stores the collateral amount of tokens added.
     */
     function addCollateral(
         address collateral,
+        uint256 version,
         uint256 amt,
         uint256 getId,
         uint256 setId
     ) external returns (string memory _eventName, bytes memory _eventParam) {
         address _collateral = collateral == ethAddr ? wethAddr : collateral;
-        IController controller = getController(_collateral);
+        IController controller = getController(_collateral, version);
         uint _amt = getUint(getId, amt);
 
         uint ethAmt;
@@ -85,18 +89,20 @@ abstract contract MakerResolver is Helpers, Events {
      * @dev Remove ETH/ERC20_Token Collateral.
      * @notice Remove some collateral without repaying the debt
      * @param collateral collateral asset address
+     * @param version   controller version
      * @param amt Amount of collateral to add
      * @param getId ID to retrieve amt.
      * @param setId ID stores the amount of tokens deposited.
     */
     function removeCollateral(
         address collateral,
+        uint256 version,
         uint256 amt,
         uint256 getId,
         uint256 setId
     ) external returns (string memory _eventName, bytes memory _eventParam) {
         address _collateral = collateral == ethAddr ? wethAddr : collateral;
-        IController controller = getController(_collateral);
+        IController controller = getController(_collateral, version);
         uint _amt = getUint(getId, amt);
 
         controller.remove_collateral(_amt, collateral == ethAddr);
@@ -110,16 +116,18 @@ abstract contract MakerResolver is Helpers, Events {
     /**
      * @dev Borrow more stablecoins while adding more collateral (not necessary)
      * @param collateral collateral token address
+     * @param version   controller version
      * @param amt Amount of collateral to add
      * @param debt Amount of stablecoin debt to take
     */
     function borrowMore(
         address collateral,
+        uint256 version,
         uint256 amt,
         uint256 debt
     ) external returns (string memory _eventName, bytes memory _eventParam) {
         address _collateral = collateral == ethAddr ? wethAddr : collateral;
-        IController controller = getController(_collateral);
+        IController controller = getController(_collateral, version);
         uint _amt = amt;
 
         uint ethAmt;
@@ -145,18 +153,20 @@ abstract contract MakerResolver is Helpers, Events {
      * @dev Borrow DAI.
      * @notice Borrow DAI using a MakerDAO vault
      * @param collateral collateral token address
+     * @param version   controller version
      * @param amt The amount of debt to repay. If higher than the current debt - will do full repayment
      * @param getId ID to retrieve amt.
      * @param setId ID stores the amount of DAI borrowed.
     */
     function repay(
         address collateral,
+        uint256 version,
         uint256 amt,
         uint256 getId,
         uint256 setId
     ) external payable returns (string memory _eventName, bytes memory _eventParam) {
         address _collateral = collateral == ethAddr ? wethAddr : collateral;
-        IController controller = getController(_collateral);
+        IController controller = getController(_collateral, version);
         uint _amt = amt;
 
         TokenInterface stableCoin = TokenInterface(CRV_USD);
@@ -173,14 +183,16 @@ abstract contract MakerResolver is Helpers, Events {
     /**
      * @dev Peform a bad liquidation (or self-liquidation) of user if health is not good
      * @param collateral collateral token address
+     * @param version   controller version
      * @param min_x Minimal amount of stablecoin to receive (to avoid liquidators being sandwiched)
     */
     function liquidate(
         address collateral,
+        uint256 version,
         uint256 min_x
     ) external payable returns (string memory _eventName, bytes memory _eventParam) {
         address _collateral = collateral == ethAddr ? wethAddr : collateral;
-        IController controller = getController(_collateral);
+        IController controller = getController(_collateral, version);
 
         controller.liquidate(address(this), min_x, collateral == ethAddr);
 
diff --git a/test/mainnet/crv_usd/crv_usd.test.ts b/test/mainnet/crv_usd/crv_usd.test.ts
index 25932004..265308e2 100644
--- a/test/mainnet/crv_usd/crv_usd.test.ts
+++ b/test/mainnet/crv_usd/crv_usd.test.ts
@@ -174,7 +174,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "createLoan",
-          args: [tokens.sfrxeth.address, ethers.utils.parseEther('1').toString(), ethers.utils.parseEther('1000'), 10]
+          args: [tokens.sfrxeth.address, "0", ethers.utils.parseEther('1').toString(), ethers.utils.parseEther('1000'), 10]
         }
       ];
 
@@ -192,7 +192,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "addCollateral",
-          args: [tokens.sfrxeth.address, ethers.utils.parseEther('1').toString(), 0, 0]
+          args: [tokens.sfrxeth.address, "0", ethers.utils.parseEther('1').toString(), 0, 0]
         }
       ];
 
@@ -210,7 +210,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "removeCollateral",
-          args: [tokens.sfrxeth.address, ethers.utils.parseEther('1').toString(), 0, 0]
+          args: [tokens.sfrxeth.address, "0", ethers.utils.parseEther('1').toString(), 0, 0]
         }
       ];
 
@@ -228,7 +228,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "borrowMore",
-          args: [tokens.sfrxeth.address, '0', ethers.utils.parseEther('50')]
+          args: [tokens.sfrxeth.address, "0", '0', ethers.utils.parseEther('50')]
         }
       ];
 
@@ -246,7 +246,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "borrowMore",
-          args: [tokens.sfrxeth.address, ethers.utils.parseEther('2'), dsaMaxValue]
+          args: [tokens.sfrxeth.address, "0", ethers.utils.parseEther('2'), dsaMaxValue]
         }
       ];
 
@@ -263,7 +263,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "createLoan",
-          args: [tokens.sfrxeth.address, ethers.utils.parseEther('1').toString(), dsaMaxValue, 10]
+          args: [tokens.sfrxeth.address, "0", ethers.utils.parseEther('1').toString(), dsaMaxValue, 10]
         }
       ];
 
@@ -275,7 +275,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "createLoan",
-          args: [tokens.sfrxeth.address, ethers.utils.parseEther('1').toString(), dsaMaxValue, 10]
+          args: [tokens.sfrxeth.address, "0", ethers.utils.parseEther('1').toString(), dsaMaxValue, 10]
         }
       ];
 
@@ -294,7 +294,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "createLoan",
-          args: [tokens.sfrxeth.address, dsaMaxValue, dsaMaxValue, 10]
+          args: [tokens.sfrxeth.address, "0", dsaMaxValue, dsaMaxValue, 10]
         }
       ];
 
@@ -316,7 +316,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "createLoan",
-          args: [tokens.eth.address, ethers.utils.parseEther('2').toString(), dsaMaxValue, 10]
+          args: [tokens.eth.address, "0", ethers.utils.parseEther('2').toString(), dsaMaxValue, 10]
         }
       ];
 
@@ -335,7 +335,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "addCollateral",
-          args: [tokens.eth.address, ethers.utils.parseEther('3').toString(), 0, 0]
+          args: [tokens.eth.address, "0", ethers.utils.parseEther('3').toString(), 0, 0]
         }
       ];
 
@@ -353,7 +353,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "removeCollateral",
-          args: [tokens.eth.address, ethers.utils.parseEther('1').toString(), 0, 0]
+          args: [tokens.eth.address, "0", ethers.utils.parseEther('1').toString(), 0, 0]
         }
       ];
 
@@ -371,7 +371,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "borrowMore",
-          args: [tokens.eth.address, '0', ethers.utils.parseEther('10')]
+          args: [tokens.eth.address, "0", '0', ethers.utils.parseEther('10')]
         }
       ];
 
@@ -389,7 +389,7 @@ describe("CRV USD", function () {
         {
           connector: connectorName,
           method: "borrowMore",
-          args: [tokens.eth.address, '0', dsaMaxValue]
+          args: [tokens.eth.address, "0", '0', dsaMaxValue]
         }
       ];