diff --git a/apps/backend/src/jest.setup.ts b/apps/backend/src/jest.setup.ts
index 84bbb3e..c34d845 100644
--- a/apps/backend/src/jest.setup.ts
+++ b/apps/backend/src/jest.setup.ts
@@ -18,6 +18,7 @@ jest.mock("@repo/database", () => {
 });
 
 beforeAll(async () => {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   const { apply } = await pushSchema(schema, db as any);
   await apply();
 });
diff --git a/apps/backend/src/middlewares/error.ts b/apps/backend/src/middlewares/error.ts
index 877e627..e1f0da8 100644
--- a/apps/backend/src/middlewares/error.ts
+++ b/apps/backend/src/middlewares/error.ts
@@ -1,12 +1,11 @@
-import { Request, Response, NextFunction, ErrorRequestHandler } from "express";
+import { Request, Response, ErrorRequestHandler } from "express";
 import { ReasonPhrases, StatusCodes } from "http-status-codes";
 import { GenericError } from "@repo/backend/utils/errors";
 
 const errorHandler: ErrorRequestHandler = (
   error: unknown,
   req: Request,
-  res: Response,
-  next: NextFunction
+  res: Response
 ) => {
   console.error(error);
 
diff --git a/apps/backend/src/middlewares/validation.ts b/apps/backend/src/middlewares/validation.ts
index 49cef03..ce24057 100644
--- a/apps/backend/src/middlewares/validation.ts
+++ b/apps/backend/src/middlewares/validation.ts
@@ -2,7 +2,7 @@ import { Request, Response, NextFunction } from "express";
 import { z, ZodError } from "zod";
 import { BadRequestError } from "@repo/backend/utils/errors";
 
-const validateHandler = (schema: z.ZodObject<any, any>) => {
+const validateHandler = (schema: z.ZodSchema) => {
   return (req: Request, res: Response, next: NextFunction) => {
     try {
       schema.parse(req);
@@ -10,7 +10,9 @@ const validateHandler = (schema: z.ZodObject<any, any>) => {
     } catch (error) {
       if (error instanceof ZodError) {
         const errorMessages = error.errors
-          .map((issue: any) => `${issue.path.join(".")} is ${issue.message}`)
+          .map(
+            (issue: z.ZodIssue) => `${issue.path.join(".")} is ${issue.message}`
+          )
           .join(", ");
         throw new BadRequestError(errorMessages);
       } else {
diff --git a/apps/backend/src/modules/auth/auth.test.ts b/apps/backend/src/modules/auth/auth.test.ts
index 2aa8809..1465cb9 100644
--- a/apps/backend/src/modules/auth/auth.test.ts
+++ b/apps/backend/src/modules/auth/auth.test.ts
@@ -258,7 +258,6 @@ describe("Auth API", () => {
         .returning();
 
       const refreshToken = jwtSignRefreshToken({ userId: user[0].id });
-      const hashedToken = await argon2.hash(refreshToken);
       await db.insert(refreshTokens).values({
         userId: user[0].id,
         token: "invalidToken",
diff --git a/apps/backend/src/modules/chat/chat.service.ts b/apps/backend/src/modules/chat/chat.service.ts
index 9f6dd3a..8a6ac88 100644
--- a/apps/backend/src/modules/chat/chat.service.ts
+++ b/apps/backend/src/modules/chat/chat.service.ts
@@ -1,4 +1,4 @@
-import { and, asc, count, desc, eq, exists, notExists } from "drizzle-orm";
+import { and, count, desc, eq, exists, notExists } from "drizzle-orm";
 import { db } from "@repo/database";
 import {
   chatParticipants,
diff --git a/apps/backend/tsconfig.json b/apps/backend/tsconfig.json
index 4368f8b..f4682d7 100644
--- a/apps/backend/tsconfig.json
+++ b/apps/backend/tsconfig.json
@@ -3,6 +3,7 @@
   "compilerOptions": {
     "lib": ["ES2015"],
     "outDir": "./dist",
+    "target": "es2017",
     "paths": {
       "@repo/backend/*": ["./src/*"]
     }
diff --git a/packages/database/drizzle.config.ts b/packages/database/drizzle.config.ts
index 812ee3f..6c85a0a 100644
--- a/packages/database/drizzle.config.ts
+++ b/packages/database/drizzle.config.ts
@@ -5,10 +5,10 @@ export default defineConfig({
   schema: "./src/schema/*.ts",
   dialect: "postgresql",
   dbCredentials: {
-    host: process.env.POSTGRES_HOST,
-    port: process.env.POSTGRES_PORT,
-    database: process.env.POSTGRES_DATABASE,
-    user: process.env.POSTGRES_USER,
-    password: process.env.POSTGRES_PASSWORD,
+    host: process.env.POSTGRES_HOST!,
+    port: Number(process.env.POSTGRES_PORT!),
+    database: process.env.POSTGRES_DATABASE!,
+    user: process.env.POSTGRES_USER!,
+    password: process.env.POSTGRES_PASSWORD!,
   },
 });
diff --git a/packages/database/src/index.ts b/packages/database/src/index.ts
index 44101d8..2e9825f 100644
--- a/packages/database/src/index.ts
+++ b/packages/database/src/index.ts
@@ -1,18 +1,18 @@
+import { Pool } from "pg";
 import { drizzle } from "drizzle-orm/node-postgres";
 import * as schema from "./schema";
 
-const db = drizzle({
-  schema: schema,
-  connection: {
-    host: process.env.POSTGRES_HOST,
-    port: process.env.POSTGRES_PORT,
-    database: process.env.POSTGRES_DATABASE,
-    user: process.env.POSTGRES_USER,
-    password: process.env.POSTGRES_PASSWORD,
-    ssl: true,
-  },
+const pool = new Pool({
+  host: process.env.POSTGRES_HOST,
+  port: Number(process.env.POSTGRES_PORT!),
+  database: process.env.POSTGRES_DATABASE,
+  user: process.env.POSTGRES_USER,
+  password: process.env.POSTGRES_PASSWORD,
+  ssl: true,
 });
 
+const db = drizzle(pool, { schema });
+
 const dbTestConnection = async () => {
   try {
     const result = await db.execute("SELECT NOW()");
diff --git a/packages/database/src/schema/base.ts b/packages/database/src/schema/base.ts
index 59a4792..cd641d7 100644
--- a/packages/database/src/schema/base.ts
+++ b/packages/database/src/schema/base.ts
@@ -1,4 +1,3 @@
-import { sql } from "drizzle-orm";
 import { timestamp } from "drizzle-orm/pg-core";
 
 const timeStamps = (softDelete = false) => {
diff --git a/packages/database/src/schema/messages.ts b/packages/database/src/schema/messages.ts
index 94b6f59..a5d9fb7 100644
--- a/packages/database/src/schema/messages.ts
+++ b/packages/database/src/schema/messages.ts
@@ -1,4 +1,4 @@
-import { pgTable, integer, text, timestamp, uuid } from "drizzle-orm/pg-core";
+import { pgTable, integer, text, timestamp } from "drizzle-orm/pg-core";
 import { timeStamps } from "./base";
 import { chats } from "./chats";
 import { users } from "./users";
diff --git a/packages/database/src/schema/realtions.ts b/packages/database/src/schema/realtions.ts
index ee8c95c..076b9e8 100644
--- a/packages/database/src/schema/realtions.ts
+++ b/packages/database/src/schema/realtions.ts
@@ -14,7 +14,7 @@ export const usersRealtions = relations(users, ({ one, many }) => ({
 
 export const userPrivacySettingsRelations = relations(
   userPrivacySettings,
-  ({ one, many }) => ({
+  ({ one }) => ({
     user: one(users, {
       fields: [userPrivacySettings.userId],
       references: [users.id],
@@ -22,7 +22,7 @@ export const userPrivacySettingsRelations = relations(
   })
 );
 
-export const friendsRealtions = relations(friends, ({ one, many }) => ({
+export const friendsRealtions = relations(friends, ({ one }) => ({
   userA: one(users, {
     fields: [friends.userA],
     references: [users.id],
@@ -35,30 +35,27 @@ export const friendsRealtions = relations(friends, ({ one, many }) => ({
   }),
 }));
 
-export const blockedUsersRelations = relations(
-  blockedUsers,
-  ({ one, many }) => ({
-    blocker: one(users, {
-      fields: [blockedUsers.blockerId],
-      references: [users.id],
-      relationName: "blocker",
-    }),
-    blocked: one(users, {
-      fields: [blockedUsers.blockedId],
-      references: [users.id],
-      relationName: "blocked",
-    }),
-  })
-);
+export const blockedUsersRelations = relations(blockedUsers, ({ one }) => ({
+  blocker: one(users, {
+    fields: [blockedUsers.blockerId],
+    references: [users.id],
+    relationName: "blocker",
+  }),
+  blocked: one(users, {
+    fields: [blockedUsers.blockedId],
+    references: [users.id],
+    relationName: "blocked",
+  }),
+}));
 
-export const chatsRelations = relations(chats, ({ one, many }) => ({
+export const chatsRelations = relations(chats, ({ many }) => ({
   chatParticipants: many(chatParticipants),
   messages: many(messages),
 }));
 
 export const chatParticipantsRelations = relations(
   chatParticipants,
-  ({ one, many }) => ({
+  ({ one }) => ({
     user: one(users, {
       fields: [chatParticipants.userId],
       references: [users.id],
@@ -70,7 +67,7 @@ export const chatParticipantsRelations = relations(
   })
 );
 
-export const messagesRelations = relations(messages, ({ one, many }) => ({
+export const messagesRelations = relations(messages, ({ one }) => ({
   sender: one(users, {
     fields: [messages.senderId],
     references: [users.id],
@@ -84,7 +81,7 @@ export const messagesRelations = relations(messages, ({ one, many }) => ({
 
 export const messageReadReceiptsRelations = relations(
   messageReadReceipts,
-  ({ one, many }) => ({
+  ({ one }) => ({
     chat: one(chats, {
       fields: [messageReadReceipts.chatId],
       references: [chats.id],