diff --git a/test/shared/types.ts b/test/shared/types.ts
index 6ac9c52..9277c3c 100644
--- a/test/shared/types.ts
+++ b/test/shared/types.ts
@@ -9,6 +9,9 @@ declare module "mocha" {
     contracts: Contracts;
     loadFixture: <T>(fixture: Fixture<T>) => Promise<T>;
     signers: Signers;
+
+    unlockTime: number;
+    lockedAmount: bigint;
   }
 }
 
diff --git a/test/unit/lock/Lock.fixture.ts b/test/unit/lock/Lock.fixture.ts
index a553b1f..72afe10 100644
--- a/test/unit/lock/Lock.fixture.ts
+++ b/test/unit/lock/Lock.fixture.ts
@@ -1,31 +1,33 @@
-import type { SignerWithAddress } from "@nomicfoundation/hardhat-ethers/signers";
 import { time } from "@nomicfoundation/hardhat-network-helpers";
-import { ethers } from "hardhat";
+import { ignition } from "hardhat";
 
+import LockModule from "../../../ignition/modules/Lock";
 import type { Lock } from "../../../types/Lock";
-import type { Lock__factory } from "../../../types/factories/Lock__factory";
+
+const ONE_YEAR_IN_SECS = time.duration.years(1);
+const ONE_GWEI = 1_000_000_000n;
+
+async function getUnlockTime(): Promise<number> {
+  return (await time.latest()) + ONE_YEAR_IN_SECS;
+}
 
 export async function lockFixture(): Promise<{
   lock: Lock;
   unlockTime: number;
-  lockedAmount: number;
+  lockedAmount: bigint;
 }> {
-  const signers = await ethers.getSigners();
-  const deployer: SignerWithAddress = signers[0];
-
-  const LockFactory: Lock__factory = (await ethers.getContractFactory("Lock")) as Lock__factory;
-
-  const ONE_YEAR_IN_SECS = time.duration.years(1);
-  const ONE_GWEI = 1_000_000_000;
-
-  const lockedAmount = ONE_GWEI;
-  const unlockTime = (await time.latest()) + ONE_YEAR_IN_SECS;
-
-  type DeployArgs = Parameters<typeof LockFactory.deploy>;
-  const args: DeployArgs = [unlockTime, { value: lockedAmount }];
-
-  const lock: Lock = (await LockFactory.connect(deployer).deploy(...args)) as Lock;
-  await lock.waitForDeployment();
+  const lockedAmount: bigint = ONE_GWEI;
+  const unlockTime: number = await getUnlockTime();
+
+  const deployedLock = await ignition.deploy(LockModule, {
+    parameters: {
+      Lock: {
+        unlockTime,
+        lockedAmount,
+      },
+    },
+  });
+  const lock = deployedLock.lock as unknown as Lock;
 
   return { lock, unlockTime, lockedAmount };
 }