diff --git a/packages/sqs/.eslintignore b/packages/sqs/.eslintignore
deleted file mode 100644
index dcaed66f..00000000
--- a/packages/sqs/.eslintignore
+++ /dev/null
@@ -1,4 +0,0 @@
-node_modules/
-coverage/
-dist/
-vitest.config.mts
diff --git a/packages/sqs/.eslintrc.json b/packages/sqs/.eslintrc.json
deleted file mode 100644
index c3989a69..00000000
--- a/packages/sqs/.eslintrc.json
+++ /dev/null
@@ -1,87 +0,0 @@
-{
-  "parser": "@typescript-eslint/parser",
-  "parserOptions": {
-    "ecmaVersion": 2022,
-    "sourceType": "module",
-    "project": "./tsconfig.json"
-  },
-  "ignorePatterns": ["node_modules"],
-  "plugins": ["@typescript-eslint", "vitest", "import"],
-  "extends": [
-    "eslint:recommended",
-    "plugin:@typescript-eslint/recommended",
-    "plugin:@typescript-eslint/recommended-requiring-type-checking",
-    "plugin:import/recommended",
-    "plugin:import/typescript",
-    "plugin:vitest/recommended"
-  ],
-  "rules": {
-    "no-empty": "off",
-    "@typescript-eslint/no-empty-function": "off",
-    "@typescript-eslint/no-empty-interface": "warn",
-    "@typescript-eslint/ban-ts-comment": "off",
-    "@typescript-eslint/no-use-before-define": "off",
-    "@typescript-eslint/no-non-null-assertion": "warn",
-    "@typescript-eslint/no-var-requires": "off",
-    "@typescript-eslint/indent": "off",
-    "@typescript-eslint/no-explicit-any": "warn",
-    "@typescript-eslint/restrict-template-expressions": "off",
-    "@typescript-eslint/no-unsafe-assignment": "off",
-    "@typescript-eslint/no-unsafe-argument": "off",
-    "@typescript-eslint/no-unsafe-call": "off",
-    "@typescript-eslint/no-unsafe-member-access": "warn",
-    "@typescript-eslint/explicit-function-return-type": "off",
-    "@typescript-eslint/consistent-type-imports": "warn",
-    "@typescript-eslint/no-unused-vars": [
-      "warn",
-      {
-        "argsIgnorePattern": "^_",
-        "varsIgnorePattern": "^_",
-        "caughtErrorsIgnorePattern": "^_"
-      }
-    ],
-    "@typescript-eslint/require-await": "off",
-    "@typescript-eslint/member-delimiter-style": [
-      "error",
-      {
-        "multiline": {
-          "delimiter": "none",
-          "requireLast": false
-        },
-        "singleline": {
-          "delimiter": "comma",
-          "requireLast": false
-        }
-      }
-    ],
-    "import/no-default-export": "error",
-    "import/order": [
-      "warn",
-      {
-        "alphabetize": { "order": "asc" },
-        "newlines-between": "always"
-      }
-    ],
-    "max-lines": ["error", { "max": 600 }],
-    "max-params": ["error", { "max": 4 }],
-    "max-statements": ["error", { "max": 30 }],
-    "complexity": ["error", { "max": 20 }]
-  },
-  "overrides": [
-    {
-      "files": ["test/**/*.ts", "*.test.ts", "*.spec.ts"],
-      "rules": {
-        "@typescript-eslint/no-unsafe-argument": "off",
-        "@typescript-eslint/no-explicit-any": "off",
-        "@typescript-eslint/no-empty-function": "off",
-        "@typescript-eslint/no-non-null-assertion": "off",
-        "@typescript-eslint/no-unsafe-return": "off",
-        "@typescript-eslint/no-unsafe-assignment": "off",
-        "@typescript-eslint/no-unsafe-member-access": "off",
-        "@typescript-eslint/no-unsafe-call": "off",
-        "@typescript-eslint/restrict-template-expressions": "off",
-        "max-statements": ["off"]
-      }
-    }
-  ]
-}
diff --git a/packages/sqs/.prettierrc.json b/packages/sqs/.prettierrc.json
deleted file mode 100644
index b59d4dd3..00000000
--- a/packages/sqs/.prettierrc.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "printWidth": 100,
-  "singleQuote": true,
-  "bracketSpacing": true,
-  "semi": false,
-  "arrowParens": "always",
-  "endOfLine": "lf",
-  "trailingComma": "all"
-}
diff --git a/packages/sqs/lib/errors/SqsConsumerErrorResolver.spec.ts b/packages/sqs/lib/errors/SqsConsumerErrorResolver.spec.ts
index ccf1f6e1..9105e69b 100644
--- a/packages/sqs/lib/errors/SqsConsumerErrorResolver.spec.ts
+++ b/packages/sqs/lib/errors/SqsConsumerErrorResolver.spec.ts
@@ -1,3 +1,4 @@
+import { describe, expect, it } from 'vitest'
 import { SqsConsumerErrorResolver } from './SqsConsumerErrorResolver'
 
 describe('SqsConsumerErrorResolver', () => {
diff --git a/packages/sqs/lib/sqs/AbstractSqsConsumer.ts b/packages/sqs/lib/sqs/AbstractSqsConsumer.ts
index 1087dace..74fbcb25 100644
--- a/packages/sqs/lib/sqs/AbstractSqsConsumer.ts
+++ b/packages/sqs/lib/sqs/AbstractSqsConsumer.ts
@@ -1,18 +1,18 @@
 import { SendMessageCommand, SetQueueAttributesCommand } from '@aws-sdk/client-sqs'
 import type { Either, ErrorResolver } from '@lokalise/node-core'
 import type {
-  QueueConsumer,
-  TransactionObservabilityManager,
-  QueueConsumerOptions,
-  PreHandlingOutputs,
-  Prehandler,
   BarrierResult,
-  QueueConsumerDependencies,
   DeadLetterQueueOptions,
-  ParseMessageResult,
   MessageSchemaContainer,
+  ParseMessageResult,
+  PreHandlingOutputs,
+  Prehandler,
+  QueueConsumer,
+  QueueConsumerDependencies,
+  QueueConsumerOptions,
+  TransactionObservabilityManager,
 } from '@message-queue-toolkit/core'
-import { isMessageError, parseMessage, HandlerContainer } from '@message-queue-toolkit/core'
+import { HandlerContainer, isMessageError, parseMessage } from '@message-queue-toolkit/core'
 import { Consumer } from 'sqs-consumer'
 import type { ConsumerOptions } from 'sqs-consumer/src/types'
 
@@ -182,7 +182,7 @@ export abstract class AbstractSqsConsumer<
       sqs: this.sqsClient,
       queueUrl: this.queueUrl,
       visibilityTimeout,
-      messageAttributeNames: [PAYLOAD_OFFLOADING_ATTRIBUTE_PREFIX + '*'],
+      messageAttributeNames: [`${PAYLOAD_OFFLOADING_ATTRIBUTE_PREFIX}*`],
       ...this.consumerOptionsOverride,
       handleMessage: async (message: SQSMessage) => {
         if (message === null) return
@@ -284,10 +284,10 @@ export abstract class AbstractSqsConsumer<
     return { error: 'retryLater' }
   }
 
-  protected override async processMessage(
+  protected override processMessage(
     message: MessagePayloadType,
     messageType: string,
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    // biome-ignore lint/suspicious/noExplicitAny: <explanation>
     preHandlingOutputs: PreHandlingOutputs<PrehandlerOutput, any>,
   ): Promise<Either<'retryLater', 'success'>> {
     const handler = this.handlerContainer.resolveHandler<PrehandlerOutput>(messageType)
@@ -301,7 +301,7 @@ export abstract class AbstractSqsConsumer<
     return this.processPrehandlersInternal(handlerConfig.preHandlers, message)
   }
 
-  protected override async preHandlerBarrier<BarrierOutput>(
+  protected override preHandlerBarrier<BarrierOutput>(
     message: MessagePayloadType,
     messageType: string,
     preHandlerOutput: PrehandlerOutput,
@@ -449,7 +449,7 @@ export abstract class AbstractSqsConsumer<
   }
 
   private async getQueueVisibilityTimeout(): Promise<number | undefined> {
-    let visibilityTimeoutString
+    let visibilityTimeoutString: string | undefined
     if (this.creationConfig) {
       visibilityTimeoutString = this.creationConfig.queue.Attributes?.VisibilityTimeout
     } else {
@@ -463,6 +463,6 @@ export abstract class AbstractSqsConsumer<
     }
 
     // parseInt is safe because if the value is not a number process should have failed on init
-    return visibilityTimeoutString ? parseInt(visibilityTimeoutString) : undefined
+    return visibilityTimeoutString ? Number.parseInt(visibilityTimeoutString) : undefined
   }
 }
diff --git a/packages/sqs/lib/sqs/AbstractSqsPublisher.ts b/packages/sqs/lib/sqs/AbstractSqsPublisher.ts
index 26f831d1..0ee2f590 100644
--- a/packages/sqs/lib/sqs/AbstractSqsPublisher.ts
+++ b/packages/sqs/lib/sqs/AbstractSqsPublisher.ts
@@ -8,8 +8,8 @@ import type {
   MessageInvalidFormatError,
   MessageSchemaContainer,
   MessageValidationError,
-  QueuePublisherOptions,
   OffloadedPayloadPointerPayload,
+  QueuePublisherOptions,
   ResolvedMessage,
 } from '@message-queue-toolkit/core'
 import type { ZodSchema } from 'zod'
@@ -27,7 +27,7 @@ export type SQSMessageOptions = {
 }
 
 export const PAYLOAD_OFFLOADING_ATTRIBUTE_PREFIX = 'payloadOffloading.'
-export const OFFLOADED_PAYLOAD_SIZE_ATTRIBUTE = PAYLOAD_OFFLOADING_ATTRIBUTE_PREFIX + 'size'
+export const OFFLOADED_PAYLOAD_SIZE_ATTRIBUTE = `${PAYLOAD_OFFLOADING_ATTRIBUTE_PREFIX}size`
 
 export abstract class AbstractSqsPublisher<MessagePayloadType extends object>
   extends AbstractSqsService<MessagePayloadType>
@@ -70,6 +70,7 @@ export abstract class AbstractSqsPublisher<MessagePayloadType extends object>
         this.logMessage(resolvedLogMessage)
       }
 
+      // biome-ignore lint/style/noParameterAssign: This is expected
       message = this.updateInternalProperties(message)
       const maybeOffloadedPayloadMessage = await this.offloadMessagePayloadIfNeeded(message, () =>
         calculateOutgoingMessageSize(message),
diff --git a/packages/sqs/lib/utils/sqsAttributeUtils.spec.ts b/packages/sqs/lib/utils/sqsAttributeUtils.spec.ts
index 62a99d50..c2810e04 100644
--- a/packages/sqs/lib/utils/sqsAttributeUtils.spec.ts
+++ b/packages/sqs/lib/utils/sqsAttributeUtils.spec.ts
@@ -1,4 +1,4 @@
-import { describe } from 'vitest'
+import { describe, expect, it } from 'vitest'
 
 import {
   generateQueuePublishForTopicPolicy,
diff --git a/packages/sqs/lib/utils/sqsInitter.ts b/packages/sqs/lib/utils/sqsInitter.ts
index 268bb138..cf3f1bb5 100644
--- a/packages/sqs/lib/utils/sqsInitter.ts
+++ b/packages/sqs/lib/utils/sqsInitter.ts
@@ -1,5 +1,5 @@
 import { SetQueueAttributesCommand } from '@aws-sdk/client-sqs'
-import type { SQSClient, QueueAttributeName } from '@aws-sdk/client-sqs'
+import type { QueueAttributeName, SQSClient } from '@aws-sdk/client-sqs'
 import type { DeletionConfig } from '@message-queue-toolkit/core'
 import { isProduction } from '@message-queue-toolkit/core'
 
diff --git a/packages/sqs/lib/utils/sqsMessageDeserializer.spec.ts b/packages/sqs/lib/utils/sqsMessageDeserializer.spec.ts
index a98c6215..1d845e89 100644
--- a/packages/sqs/lib/utils/sqsMessageDeserializer.spec.ts
+++ b/packages/sqs/lib/utils/sqsMessageDeserializer.spec.ts
@@ -1,8 +1,8 @@
+import { describe, expect, it } from 'vitest'
 import type { PERMISSIONS_MESSAGE_TYPE } from '../../test/consumers/userConsumerSchemas'
 import { PERMISSIONS_MESSAGE_SCHEMA } from '../../test/consumers/userConsumerSchemas'
 import { SqsConsumerErrorResolver } from '../errors/SqsConsumerErrorResolver'
 import type { SQSMessage } from '../types/MessageTypes'
-
 import { deserializeSQSMessage } from './sqsMessageDeserializer'
 
 describe('messageDeserializer', () => {
diff --git a/packages/sqs/lib/utils/sqsUtils.ts b/packages/sqs/lib/utils/sqsUtils.ts
index 4faa2f43..d60c15ad 100644
--- a/packages/sqs/lib/utils/sqsUtils.ts
+++ b/packages/sqs/lib/utils/sqsUtils.ts
@@ -1,15 +1,15 @@
 import {
   CreateQueueCommand,
-  GetQueueUrlCommand,
   DeleteQueueCommand,
   GetQueueAttributesCommand,
-  SetQueueAttributesCommand,
+  GetQueueUrlCommand,
   ListQueuesCommand,
+  SetQueueAttributesCommand,
 } from '@aws-sdk/client-sqs'
 import type {
   CreateQueueCommandInput,
-  SQSClient,
   QueueAttributeName,
+  SQSClient,
   SendMessageCommandInput,
 } from '@aws-sdk/client-sqs'
 import type { Either } from '@lokalise/node-core'
diff --git a/packages/sqs/package.json b/packages/sqs/package.json
index 44bbf084..76be3bff 100644
--- a/packages/sqs/package.json
+++ b/packages/sqs/package.json
@@ -18,8 +18,8 @@
     "test": "vitest",
     "test:coverage": "npm test -- --coverage",
     "test:ci": "npm run docker:start:dev && npm run test:coverage && npm run docker:stop:dev",
-    "lint": "eslint . --ext .ts && tsc --noEmit",
-    "lint:fix": "prettier --write . && eslint .  --ext .ts --fix",
+    "lint": "biome check && tsc --project tsconfig.json --noEmit",
+    "lint:fix": "biome check --write .",
     "docker:start:dev": "docker compose up -d",
     "docker:stop:dev": "docker compose down",
     "prepublishOnly": "npm run build:release"
@@ -34,22 +34,18 @@
     "@message-queue-toolkit/core": "^15.0.0"
   },
   "devDependencies": {
-    "@aws-sdk/client-s3": "^3.608.0",
-    "@aws-sdk/client-sqs": "^3.606.0",
+    "@aws-sdk/client-s3": "^3.614.0",
+    "@aws-sdk/client-sqs": "^3.614.0",
+    "@biomejs/biome": "1.8.3",
+    "@kibertoad/biome-config": "^1.2.1",
     "@message-queue-toolkit/core": "*",
     "@message-queue-toolkit/s3-payload-store": "*",
     "@types/node": "^20.12.8",
-    "@typescript-eslint/eslint-plugin": "^7.1.1",
-    "@typescript-eslint/parser": "^7.1.1",
     "@vitest/coverage-v8": "^1.6.0",
     "awilix": "^10.0.1",
     "awilix-manager": "^5.1.0",
     "del-cli": "^5.1.0",
-    "eslint": "^8.57.0",
-    "eslint-plugin-import": "^2.29.1",
-    "eslint-plugin-vitest": "0.4.1",
-    "prettier": "^3.2.5",
-    "typescript": "^5.4.5",
+    "typescript": "^5.5.3",
     "vitest": "^1.6.0"
   },
   "homepage": "https://github.com/kibertoad/message-queue-toolkit",
@@ -57,18 +53,6 @@
     "type": "git",
     "url": "git://github.com/kibertoad/message-queue-toolkit.git"
   },
-  "keywords": [
-    "message",
-    "queue",
-    "queues",
-    "abstract",
-    "common",
-    "utils",
-    "sqs"
-  ],
-  "files": [
-    "README.md",
-    "LICENSE",
-    "dist/*"
-  ]
+  "keywords": ["message", "queue", "queues", "abstract", "common", "utils", "sqs"],
+  "files": ["README.md", "LICENSE", "dist/*"]
 }
diff --git a/packages/sqs/test/consumers/SqsPermissionConsumer.payloadOffloading.spec.ts b/packages/sqs/test/consumers/SqsPermissionConsumer.payloadOffloading.spec.ts
index b35527c7..53643608 100644
--- a/packages/sqs/test/consumers/SqsPermissionConsumer.payloadOffloading.spec.ts
+++ b/packages/sqs/test/consumers/SqsPermissionConsumer.payloadOffloading.spec.ts
@@ -3,7 +3,7 @@ import type { PayloadStoreConfig } from '@message-queue-toolkit/core'
 import { S3PayloadStore } from '@message-queue-toolkit/s3-payload-store'
 import type { AwilixContainer } from 'awilix'
 import { asValue } from 'awilix'
-import { describe, beforeEach, afterEach, expect, it } from 'vitest'
+import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it } from 'vitest'
 
 import { SQS_MESSAGE_MAX_SIZE } from '../../lib/sqs/AbstractSqsService'
 import { SqsPermissionPublisher } from '../publishers/SqsPermissionPublisher'
diff --git a/packages/sqs/test/consumers/SqsPermissionConsumer.spec.ts b/packages/sqs/test/consumers/SqsPermissionConsumer.spec.ts
index 7e67c3d0..86dafbe5 100644
--- a/packages/sqs/test/consumers/SqsPermissionConsumer.spec.ts
+++ b/packages/sqs/test/consumers/SqsPermissionConsumer.spec.ts
@@ -1,20 +1,19 @@
-/* eslint-disable max-lines */
 import { setTimeout } from 'node:timers/promises'
 
-import type { SendMessageCommandInput, SQSClient } from '@aws-sdk/client-sqs'
-import { SendMessageCommand, ReceiveMessageCommand } from '@aws-sdk/client-sqs'
+import type { SQSClient, SendMessageCommandInput } from '@aws-sdk/client-sqs'
+import { ReceiveMessageCommand, SendMessageCommand } from '@aws-sdk/client-sqs'
 import { waitAndRetry } from '@lokalise/node-core'
 import type { BarrierResult } from '@message-queue-toolkit/core'
 import type { AwilixContainer } from 'awilix'
-import { asValue, asClass, asFunction } from 'awilix'
-import { describe, beforeEach, afterEach, expect, it } from 'vitest'
+import { asClass, asFunction, asValue } from 'awilix'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { ZodError } from 'zod'
 
 import { FakeConsumerErrorResolver } from '../../lib/fakes/FakeConsumerErrorResolver'
 import { assertQueue, deleteQueue, getQueueAttributes } from '../../lib/utils/sqsUtils'
 import { FakeLogger } from '../fakes/FakeLogger'
 import { SqsPermissionPublisher } from '../publishers/SqsPermissionPublisher'
-import { registerDependencies, SINGLETON_CONFIG } from '../utils/testContext'
+import { SINGLETON_CONFIG, registerDependencies } from '../utils/testContext'
 import type { Dependencies } from '../utils/testContext'
 
 import { SqsPermissionConsumer } from './SqsPermissionConsumer'
@@ -230,15 +229,15 @@ describe('SqsPermissionConsumer', () => {
             QueueName: publisher.queueProps.name,
           },
         },
-        addPreHandlerBarrier: async (_msg): Promise<BarrierResult<number>> => {
+        addPreHandlerBarrier: (_msg): Promise<BarrierResult<number>> => {
           barrierCounter++
           if (barrierCounter < 2) {
-            return {
+            return Promise.resolve({
               isPassing: false,
-            }
+            })
           }
 
-          return { isPassing: true, output: barrierCounter }
+          return Promise.resolve({ isPassing: true, output: barrierCounter })
         },
       })
       await newConsumer.start()
@@ -263,14 +262,14 @@ describe('SqsPermissionConsumer', () => {
             QueueName: publisher.queueProps.name,
           },
         },
-        addPreHandlerBarrier: async (
+        addPreHandlerBarrier: (
           message,
-          executionContext,
+          _executionContext,
           preHandlerOutput,
         ): Promise<BarrierResult<number>> => {
           expect(preHandlerOutput.messageId).toBe(message.id)
 
-          return { isPassing: true, output: 1 }
+          return Promise.resolve({ isPassing: true, output: 1 })
         },
       })
       await newConsumer.start()
@@ -338,14 +337,14 @@ describe('SqsPermissionConsumer', () => {
             QueueName: publisher.queueProps.name,
           },
         },
-        removeHandlerOverride: async (message, _context, preHandlerOutputs) => {
+        removeHandlerOverride: (message, _context, preHandlerOutputs) => {
           expect(preHandlerOutputs.preHandlerOutput.messageId).toEqual(message.id)
-          return {
+          return Promise.resolve({
             result: 'success',
-          }
+          })
         },
         removePreHandlers: [
-          (message, context, preHandlerOutput, next) => {
+          (message, _context, preHandlerOutput, next) => {
             preHandlerOutput.messageId = message.id
             next({
               result: 'success',
@@ -374,21 +373,21 @@ describe('SqsPermissionConsumer', () => {
             QueueName: publisher.queueProps.name,
           },
         },
-        removeHandlerOverride: async (message, _context, preHandlerOutputs) => {
-          expect(preHandlerOutputs.preHandlerOutput.messageId).toEqual(message.id + ' adjusted')
-          return {
+        removeHandlerOverride: (message, _context, preHandlerOutputs) => {
+          expect(preHandlerOutputs.preHandlerOutput.messageId).toEqual(`${message.id} adjusted`)
+          return Promise.resolve({
             result: 'success',
-          }
+          })
         },
         removePreHandlers: [
-          (message, context, preHandlerOutput, next) => {
+          (message, _context, preHandlerOutput, next) => {
             preHandlerOutput.messageId = message.id
             next({
               result: 'success',
             })
           },
 
-          (message, context, preHandlerOutput, next) => {
+          (_message, _context, preHandlerOutput, next) => {
             preHandlerOutput.messageId += ' adjusted'
             next({
               result: 'success',
@@ -535,9 +534,9 @@ describe('SqsPermissionConsumer', () => {
 
         const consumer2 = new SqsPermissionConsumer(diContainer.cradle, {
           locatorConfig: { queueUrl: consumer1.queueProps.url },
-          removeHandlerOverride: async () => {
+          removeHandlerOverride: () => {
             consumer2Counter++
-            return { result: 'success' }
+            return Promise.resolve({ result: 'success' })
           },
         })
         const publisher = new SqsPermissionPublisher(diContainer.cradle, {
diff --git a/packages/sqs/test/consumers/SqsPermissionConsumer.ts b/packages/sqs/test/consumers/SqsPermissionConsumer.ts
index dd350b71..1385e8f5 100644
--- a/packages/sqs/test/consumers/SqsPermissionConsumer.ts
+++ b/packages/sqs/test/consumers/SqsPermissionConsumer.ts
@@ -1,6 +1,6 @@
 import type { Either } from '@lokalise/node-core'
 import { MessageHandlerConfigBuilder } from '@message-queue-toolkit/core'
-import type { BarrierResult, Prehandler, PreHandlingOutputs } from '@message-queue-toolkit/core'
+import type { BarrierResult, PreHandlingOutputs, Prehandler } from '@message-queue-toolkit/core'
 
 import type { SQSConsumerDependencies, SQSConsumerOptions } from '../../lib/sqs/AbstractSqsConsumer'
 import { AbstractSqsConsumer } from '../../lib/sqs/AbstractSqsConsumer'
@@ -66,15 +66,15 @@ export class SqsPermissionConsumer extends AbstractSqsConsumer<
       },
     },
   ) {
-    const defaultRemoveHandler = async (
+    const defaultRemoveHandler = (
       _message: SupportedMessages,
       context: ExecutionContext,
       _preHandlingOutputs: PreHandlingOutputs<PrehandlerOutput, number>,
     ): Promise<Either<'retryLater', 'success'>> => {
       this.removeCounter += context.incrementAmount
-      return {
+      return Promise.resolve({
         result: 'success',
-      }
+      })
     }
 
     super(
@@ -106,14 +106,14 @@ export class SqsPermissionConsumer extends AbstractSqsConsumer<
         >()
           .addConfig(
             PERMISSIONS_ADD_MESSAGE_SCHEMA,
-            async (_message, context, barrierOutput) => {
+            (_message, context, barrierOutput) => {
               if (options.addPreHandlerBarrier && !barrierOutput) {
-                return { error: 'retryLater' }
+                return Promise.resolve({ error: 'retryLater' })
               }
               this.addCounter += context.incrementAmount
-              return {
+              return Promise.resolve({
                 result: 'success',
-              }
+              })
             },
             {
               preHandlerBarrier: options.addPreHandlerBarrier,
diff --git a/packages/sqs/test/consumers/SqsPermisssionConsumer.deadLetterQueue.spec.ts b/packages/sqs/test/consumers/SqsPermisssionConsumer.deadLetterQueue.spec.ts
index 44b27f83..95e22a19 100644
--- a/packages/sqs/test/consumers/SqsPermisssionConsumer.deadLetterQueue.spec.ts
+++ b/packages/sqs/test/consumers/SqsPermisssionConsumer.deadLetterQueue.spec.ts
@@ -3,7 +3,7 @@ import { SendMessageCommand } from '@aws-sdk/client-sqs'
 import { waitAndRetry } from '@lokalise/node-core'
 import type { AwilixContainer } from 'awilix'
 import { Consumer } from 'sqs-consumer'
-import { afterEach, beforeEach, describe, expect, it } from 'vitest'
+import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it } from 'vitest'
 
 import type { SQSMessage } from '../../lib/types/MessageTypes'
 import { assertQueue, deleteQueue, getQueueAttributes } from '../../lib/utils/sqsUtils'
@@ -224,7 +224,7 @@ describe('SqsPermissionConsumer - deadLetterQueue', () => {
           creationConfig: { queue: { QueueName: deadLetterQueueName } },
           redrivePolicy: { maxReceiveCount: 2 },
         },
-        removeHandlerOverride: async () => {
+        removeHandlerOverride: () => {
           counter++
           throw new Error('Error')
         },
@@ -235,15 +235,16 @@ describe('SqsPermissionConsumer - deadLetterQueue', () => {
       const dlqConsumer = Consumer.create({
         sqs: diContainer.cradle.sqsClient,
         queueUrl: consumer.dlqUrl,
-        handleMessage: async (message: SQSMessage) => {
+        handleMessage: (message: SQSMessage) => {
           dlqMessage = message
+          return Promise.resolve()
         },
       })
       dlqConsumer.start()
 
       await permissionPublisher.publish({ id: '1', messageType: 'remove' })
 
-      await waitAndRetry(async () => dlqMessage, 50, 20)
+      await waitAndRetry(() => dlqMessage, 50, 20)
 
       expect(counter).toBe(2)
       expect(JSON.parse(dlqMessage.Body)).toEqual({
@@ -265,13 +266,15 @@ describe('SqsPermissionConsumer - deadLetterQueue', () => {
           creationConfig: { queue: { QueueName: deadLetterQueueName } },
           redrivePolicy: { maxReceiveCount: 1 },
         },
-        removeHandlerOverride: async (message) => {
+        removeHandlerOverride: (message) => {
           if (message.id !== sqsMessage.id) {
             throw new Error('not expected message')
           }
           counter++
           messageArrivalTime.push(new Date().getTime())
-          return counter < 2 ? { error: 'retryLater' } : { result: 'success' }
+          return counter < 2
+            ? Promise.resolve({ error: 'retryLater' })
+            : Promise.resolve({ result: 'success' })
         },
       })
       await consumer.start()
@@ -303,8 +306,9 @@ describe('SqsPermissionConsumer - deadLetterQueue', () => {
       const dlqConsumer = Consumer.create({
         sqs: diContainer.cradle.sqsClient,
         queueUrl: consumer.dlqUrl,
-        handleMessage: async (message: SQSMessage) => {
+        handleMessage: (message: SQSMessage) => {
           dlqMessage = message
+          return Promise.resolve()
         },
       })
       dlqConsumer.start()
@@ -344,8 +348,9 @@ describe('SqsPermissionConsumer - deadLetterQueue', () => {
       const dlqConsumer = Consumer.create({
         sqs: diContainer.cradle.sqsClient,
         queueUrl: consumer.dlqUrl,
-        handleMessage: async (message: SQSMessage) => {
+        handleMessage: (message: SQSMessage) => {
           dlqMessage = message
+          return Promise.resolve()
         },
       })
       dlqConsumer.start()
@@ -385,7 +390,7 @@ describe('SqsPermissionConsumer - deadLetterQueue', () => {
           redrivePolicy: { maxReceiveCount: 200 },
         },
         maxRetryDuration: 2,
-        removeHandlerOverride: async () => {
+        removeHandlerOverride: () => {
           counter++
           return Promise.resolve({ error: 'retryLater' })
         },
@@ -396,8 +401,9 @@ describe('SqsPermissionConsumer - deadLetterQueue', () => {
       const dlqConsumer = Consumer.create({
         sqs: diContainer.cradle.sqsClient,
         queueUrl: consumer.dlqUrl,
-        handleMessage: async (message: SQSMessage) => {
+        handleMessage: (message: SQSMessage) => {
           dlqMessage = message
+          return Promise.resolve()
         },
       })
       dlqConsumer.start()
diff --git a/packages/sqs/test/publishers/SqsPermissionPublisher.payloadOffloading.spec.ts b/packages/sqs/test/publishers/SqsPermissionPublisher.payloadOffloading.spec.ts
index d5e68e34..d04ae891 100644
--- a/packages/sqs/test/publishers/SqsPermissionPublisher.payloadOffloading.spec.ts
+++ b/packages/sqs/test/publishers/SqsPermissionPublisher.payloadOffloading.spec.ts
@@ -14,7 +14,7 @@ import {
 import type { AwilixContainer } from 'awilix'
 import { asValue } from 'awilix'
 import { Consumer } from 'sqs-consumer'
-import { describe, beforeEach, afterEach, expect, it } from 'vitest'
+import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it } from 'vitest'
 
 import type { PERMISSIONS_ADD_MESSAGE_TYPE } from '../consumers/userConsumerSchemas'
 import { assertBucket, getObjectContent } from '../utils/s3Utils'
@@ -60,11 +60,12 @@ describe('SqsPermissionPublisher', () => {
       receivedSqsMessages = []
       consumer = Consumer.create({
         queueUrl,
-        handleMessage: async (message: Message) => {
+        handleMessage: (message: Message) => {
           if (message === null) {
-            return
+            return Promise.resolve()
           }
           receivedSqsMessages.push(message)
+          return Promise.resolve()
         },
         sqs: sqsClient,
         messageAttributeNames: [OFFLOADED_PAYLOAD_SIZE_ATTRIBUTE],
diff --git a/packages/sqs/test/publishers/SqsPermissionPublisher.spec.ts b/packages/sqs/test/publishers/SqsPermissionPublisher.spec.ts
index 9baecd1b..69869afa 100644
--- a/packages/sqs/test/publishers/SqsPermissionPublisher.spec.ts
+++ b/packages/sqs/test/publishers/SqsPermissionPublisher.spec.ts
@@ -2,7 +2,7 @@ import type { SQSClient } from '@aws-sdk/client-sqs'
 import { waitAndRetry } from '@lokalise/node-core'
 import type { AwilixContainer } from 'awilix'
 import { Consumer } from 'sqs-consumer'
-import { afterEach, beforeEach, describe, expect, it } from 'vitest'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 
 import { FakeConsumerErrorResolver } from '../../lib/fakes/FakeConsumerErrorResolver'
 import type { SQSMessage } from '../../lib/types/MessageTypes'
@@ -202,9 +202,9 @@ describe('SqsPermissionPublisher', () => {
       let receivedMessage: unknown
       const consumer = Consumer.create({
         queueUrl: queueUrl,
-        handleMessage: async (message: SQSMessage) => {
+        handleMessage: (message: SQSMessage) => {
           if (message === null) {
-            return
+            return Promise.resolve()
           }
           const decodedMessage = deserializeSQSMessage(
             message as any,
@@ -212,6 +212,7 @@ describe('SqsPermissionPublisher', () => {
             new FakeConsumerErrorResolver(),
           )
           receivedMessage = decodedMessage.result!
+          return Promise.resolve()
         },
         sqs: diContainer.cradle.sqsClient,
       })
diff --git a/packages/sqs/test/utils/testContext.ts b/packages/sqs/test/utils/testContext.ts
index 4b5d4fde..0bad3f5b 100644
--- a/packages/sqs/test/utils/testContext.ts
+++ b/packages/sqs/test/utils/testContext.ts
@@ -3,7 +3,7 @@ import { SQSClient } from '@aws-sdk/client-sqs'
 import type { ErrorReporter, ErrorResolver } from '@lokalise/node-core'
 import type { Logger, TransactionObservabilityManager } from '@message-queue-toolkit/core'
 import type { Resolver } from 'awilix'
-import { asClass, asFunction, createContainer, Lifetime } from 'awilix'
+import { Lifetime, asClass, asFunction, createContainer } from 'awilix'
 import { AwilixManager } from 'awilix-manager'
 
 import { SqsConsumerErrorResolver } from '../../lib/errors/SqsConsumerErrorResolver'
@@ -88,7 +88,7 @@ export async function registerDependencies(dependencyOverrides: DependencyOverri
   return diContainer
 }
 
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
+// biome-ignore lint/suspicious/noExplicitAny: This is expected
 type DiConfig = Record<keyof Dependencies, Resolver<any>>
 
 export interface Dependencies {