diff --git a/deploy/002_deploy_rln_registry.ts b/deploy/002_deploy_rln_registry.ts
index 71f266e..89b1694 100644
--- a/deploy/002_deploy_rln_registry.ts
+++ b/deploy/002_deploy_rln_registry.ts
@@ -16,9 +16,14 @@ const func: DeployFunction = async function (hre: HardhatRuntimeEnvironment) {
     log: true,
   });
 
-  let initializeAbi = ["function initialize(address _poseidonHasher)"];
+  let initializeAbi = [
+    "function initialize(address _poseidonHasher, uint40 _ttl)",
+  ];
   let iface = new hre.ethers.utils.Interface(initializeAbi);
-  const data = iface.encodeFunctionData("initialize", [poseidonHasherAddress]);
+  const data = iface.encodeFunctionData("initialize", [
+    poseidonHasherAddress,
+    0,
+  ]);
 
   await deploy("WakuRlnRegistry_Proxy", {
     contract: "ERC1967Proxy",
diff --git a/test/WakuRln.t.sol b/test/WakuRln.t.sol
index 63feb9c..d062bde 100644
--- a/test/WakuRln.t.sol
+++ b/test/WakuRln.t.sol
@@ -16,13 +16,14 @@ contract WakuRlnTest is Test {
     uint256 public constant MEMBERSHIP_DEPOSIT = 1000000000000000;
     uint256 public constant DEPTH = 20;
     uint256 public constant SET_SIZE = 1048576;
+    uint40 public constant TTL = 100;
 
     uint256[8] public zeroedProof = [0, 0, 0, 0, 0, 0, 0, 0];
 
     /// @dev Setup the testing environment.
     function setUp() public {
         poseidon = new PoseidonHasher();
-        wakuRln = new WakuRln(address(poseidon), 0);
+        wakuRln = new WakuRln(address(poseidon), 0, TTL);
     }
 
     /// @dev Ensure that you can hash a value.
diff --git a/test/WakuRlnRegistry.t.sol b/test/WakuRlnRegistry.t.sol
index 3b07cab..2833228 100644
--- a/test/WakuRlnRegistry.t.sol
+++ b/test/WakuRlnRegistry.t.sol
@@ -19,7 +19,7 @@ contract WakuRlnRegistryTest is Test {
     function setUp() public {
         poseidonHasher = new PoseidonHasher();
         address implementation = address(new WakuRlnRegistry());
-        bytes memory data = abi.encodeCall(WakuRlnRegistry.initialize, address(poseidonHasher));
+        bytes memory data = abi.encodeCall(WakuRlnRegistry.initialize, (address(poseidonHasher), 0));
         address proxy = address(new ERC1967Proxy(implementation, data));
         wakuRlnRegistry = WakuRlnRegistry(proxy);
     }
@@ -29,14 +29,14 @@ contract WakuRlnRegistryTest is Test {
     }
 
     function test__RegisterStorage_BadIndex() public {
-        wakuRlnRegistry.registerStorage(address(new WakuRln(address(poseidonHasher), 0)));
-        address newStorage = address(new WakuRln(address(poseidonHasher), 0));
+        wakuRlnRegistry.registerStorage(address(new WakuRln(address(poseidonHasher), 0, 0)));
+        address newStorage = address(new WakuRln(address(poseidonHasher), 0, 0));
         vm.expectRevert(IncompatibleStorageIndex.selector);
         wakuRlnRegistry.registerStorage(newStorage);
     }
 
     function test__RegisterStorage_BadImpl() public {
-        address newStorage = address(new WakuRln(address(new PoseidonHasher()), 0));
+        address newStorage = address(new WakuRln(address(new PoseidonHasher()), 0, 0));
         vm.expectRevert(IncompatibleStorage.selector);
         wakuRlnRegistry.registerStorage(newStorage);
     }