diff --git a/Readme.md b/Readme.md
index a898efb..9a36611 100644
--- a/Readme.md
+++ b/Readme.md
@@ -9,7 +9,7 @@ ganache-cli --fork https://mainnet.infura.io/v3/6f4f43507fa24302a651b52073c98d8a
 # --private-key: Private key belongs to mnemonic
 # --gas-price: Needs to be high enough. Unfortunately Ganache can't yet suggest a gas price.
 # --json: Export in JSON to extract contract info later
-forge create contracts/YieldLever.sol:YieldLever --rpc-url "http://127.0.0.1:8545" --private-key 0xde7e35b0dd8b3bebebd1f793daf12659f9cf3cb7d52a3d3921fcff63808e7d05 --legacy --gas-price 182929878490 --json > ./frontend/src/generated/deployment.json
+forge create contracts/YieldLever.sol:YieldLever --rpc-url "http://127.0.0.1:8545" --private-key 0xde7e35b0dd8b3bebebd1f793daf12659f9cf3cb7d52a3d3921fcff63808e7d05 --legacy --gas-price 182929878490 --json > ./frontend/src/generated/deployment.json --constructor-args 0x303900000000 0xa354F35829Ae975e850e23e9615b11Da1B3dC4DE 0x32E4c68B3A4a813b710595AebA7f6B7604Ab9c15 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 0x0d9A1A773be5a83eEbda23bf98efB8585C3ae4f4 0x6cB18fF2A33e981D1e38A663Ca056c0a5265066A 0x403ae7384E89b086Ea2935d5fAFed07465242B38 0xc88191F8cb8e6D4a668B047c1C8503432c3Ca867
 
 # Copy YieldLever ABI to the source folder and generate typings
 cp ".\out\YieldLever.sol\YieldLever.json" ".\frontend\src\generated\abi/"
diff --git a/contracts/YieldLever.sol b/contracts/YieldLever.sol
index 1ecb9b5..ab21ded 100644
--- a/contracts/YieldLever.sol
+++ b/contracts/YieldLever.sol
@@ -107,19 +107,36 @@ interface Cauldron {
 }
 
 contract YieldLever {
-  yVault constant yvUSDC = yVault(0xa354F35829Ae975e850e23e9615b11Da1B3dC4DE);
-  bytes6 constant ilkId = bytes6(0x303900000000); // for yvUSDC
-  IToken constant iUSDC = IToken(0x32E4c68B3A4a813b710595AebA7f6B7604Ab9c15); 
-  IERC20 constant usdc = IERC20(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48);
-  address constant usdcJoin = address(0x0d9A1A773be5a83eEbda23bf98efB8585C3ae4f4);
-  YieldLadle constant ladle = YieldLadle(0x6cB18fF2A33e981D1e38A663Ca056c0a5265066A);
-  address constant yvUSDCJoin = address(0x403ae7384E89b086Ea2935d5fAFed07465242B38);
-  Cauldron constant cauldron = Cauldron(0xc88191F8cb8e6D4a668B047c1C8503432c3Ca867);
+  bytes6 ilkId; // for yvUSDC
+  yVault yvUSDC;
+  IToken iUSDC; 
+  IERC20 usdc;
+  address usdcJoin;
+  YieldLadle ladle;
+  address yvUSDCJoin;
+  Cauldron cauldron;
 
   bytes6 constant usdcId = bytes6(bytes32("02"));
 
-  /// @dev YieldLever is not expected to hold any USDC
-  constructor() {
+  /// @dev YieldLever is not expected to hold any USDC, so approve transfers for any amount.
+  constructor(
+    bytes6 ilkId_,
+    yVault yvUSDC_,
+    IToken iUSDC_,
+    IERC20 usdc_,
+    address usdcJoin_,
+    YieldLadle ladle_,
+    address yvUSDCJoin_,
+    Cauldron cauldron_
+  ) {
+    ilkId = ilkId_;
+    yvUSDC = yvUSDC_;
+    iUSDC = iUSDC_;
+    usdc = usdc_;
+    usdcJoin = usdcJoin_;
+    ladle = ladle_;
+    yvUSDCJoin = yvUSDCJoin_;
+    cauldron = cauldron_;
     usdc.approve(address(yvUSDC), type(uint256).max);
   }
 
diff --git a/test/YieldLever.t.sol b/test/YieldLever.t.sol
index 9aa1ae5..58add95 100644
--- a/test/YieldLever.t.sol
+++ b/test/YieldLever.t.sol
@@ -96,7 +96,16 @@ contract YieldLeverTest is Test {
     }
 
     function setUp() public {
-        yieldLever = new YieldLever();
+        yieldLever = new YieldLever(
+            0x303900000000,
+            yVault(0xa354F35829Ae975e850e23e9615b11Da1B3dC4DE),
+            IToken(0x32E4c68B3A4a813b710595AebA7f6B7604Ab9c15),
+            IERC20(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48),
+            address(0x0d9A1A773be5a83eEbda23bf98efB8585C3ae4f4),
+            YieldLadle(0x6cB18fF2A33e981D1e38A663Ca056c0a5265066A),
+            address(0x403ae7384E89b086Ea2935d5fAFed07465242B38),
+            Cauldron(0xc88191F8cb8e6D4a668B047c1C8503432c3Ca867)
+        );
         helperContract = new HelperContract();
         helperContract.grantYieldLeverAccess(address(yieldLever));
     }