diff --git a/package.json b/package.json
index 17d859a..fb7c656 100644
--- a/package.json
+++ b/package.json
@@ -37,24 +37,24 @@
     "postpublish": "git push origin && git push origin -f --tags"
   },
   "dependencies": {
-    "acquerello": "^1.1.2",
+    "acquerello": "^2.0.0",
     "hdr-histogram-js": "^3.0.0",
     "table": "^6.8.1"
   },
   "devDependencies": {
-    "@cowtech/eslint-config": "^8.10.0",
-    "@swc/cli": "^0.1.62",
-    "@swc/core": "^1.3.94",
-    "@types/node": "^20.8.7",
-    "@types/tap": "^15.0.10",
+    "@cowtech/eslint-config": "^9.0.0",
+    "@swc/cli": "^0.1.63",
+    "@swc/core": "^1.3.101",
+    "@types/node": "^20.10.5",
+    "@types/tap": "^15.0.11",
     "c8": "^8.0.1",
     "chokidar": "^3.5.3",
     "concurrently": "^8.2.2",
-    "prettier": "^3.0.3",
+    "prettier": "^3.1.1",
     "proxyquire": "^2.1.3",
-    "tap": "^18.5.2",
-    "ts-node": "^10.9.1",
-    "typescript": "^5.2.2"
+    "tap": "^18.6.1",
+    "ts-node": "^10.9.2",
+    "typescript": "^5.3.3"
   },
   "engines": {
     "node": ">= 18.18.0"
diff --git a/src/index.ts b/src/index.ts
index c9a153d..1e06442 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,6 +1,7 @@
 import { isMainThread, Worker, workerData } from 'node:worker_threads'
 import {
   defaultOptions,
+  type Result,
   runnerPath,
   type Callback,
   type Context,
@@ -88,7 +89,7 @@ function run(context: Context): void {
     context.current++
 
     if (context.onTestEnd) {
-      context.onTestEnd(name, result, worker)
+      context.onTestEnd(name, result as Result, worker)
     }
 
     scheduleNextTest(context)
diff --git a/src/runner.ts b/src/runner.ts
index 8358448..8c7e121 100644
--- a/src/runner.ts
+++ b/src/runner.ts
@@ -1,4 +1,5 @@
 import { isMainThread, parentPort, workerData } from 'node:worker_threads'
+import { type WorkerContext } from './models.js'
 import { runWorker } from './worker.js'
 
 if (isMainThread) {
@@ -34,11 +35,11 @@ chain
   .then(() => {
     // Run the worker
     runWorker(
-      workerData,
+      workerData as WorkerContext,
       value => {
         parentPort!.postMessage({ type: 'cronometro.result', payload: value })
       },
-      process.exit
+      (code: number) => process.exit(code)
     )
   })
   .catch(error => {
diff --git a/src/worker.ts b/src/worker.ts
index 72e3bd8..ea534a1 100644
--- a/src/worker.ts
+++ b/src/worker.ts
@@ -103,7 +103,7 @@ function runTestIteration(context: TestContext): void {
   } catch (error) {
     // If a error was thrown, only handle if the original function length is 0, which means it's a sync error, otherwise propagate
     if (context.test.length === 0) {
-      context.handler(error)
+      context.handler(error as Error)
       return
     }
 
diff --git a/test/genericErrorHandling.test.ts b/test/genericErrorHandling.test.ts
index 1b80f78..cb968bd 100644
--- a/test/genericErrorHandling.test.ts
+++ b/test/genericErrorHandling.test.ts
@@ -2,10 +2,10 @@
 
 import { isMainThread } from 'node:worker_threads'
 import t from 'tap'
-import { cronometro } from '../src/index.js'
+import { cronometro, type Tests } from '../src/index.js'
 
 if (!isMainThread) {
-  cronometro(undefined as any, () => false)
+  cronometro(undefined as unknown as Tests, () => false)
 } else {
   t.test('Generic error handling', async t => {
     const results = await cronometro(