diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c7dc3807..61cb9fcd5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Exposed the database index of _Redis_ as an environment variable (`REDIS_DB`)
 - Upgraded `prisma` from version `5.9.1` to `5.10.2`
 
 ## 2.55.0 - 2024-02-22
diff --git a/README.md b/README.md
index 0d4bf3cfb..c82ad50c3 100644
--- a/README.md
+++ b/README.md
@@ -99,6 +99,7 @@ We provide official container images hosted on [Docker Hub](https://hub.docker.c
 | `POSTGRES_DB`            |               | The name of the _PostgreSQL_ database                                                                                               |
 | `POSTGRES_PASSWORD`      |               | The password of the _PostgreSQL_ database                                                                                           |
 | `POSTGRES_USER`          |               | The user of the _PostgreSQL_ database                                                                                               |
+| `REDIS_DB`               | `0`           | The database index of _Redis_                                                                                                       |
 | `REDIS_HOST`             |               | The host where _Redis_ is running                                                                                                   |
 | `REDIS_PASSWORD`         |               | The password of _Redis_                                                                                                             |
 | `REDIS_PORT`             |               | The port where _Redis_ is running                                                                                                   |
diff --git a/apps/api/src/app/app.module.ts b/apps/api/src/app/app.module.ts
index 506a76a8a..5f2be5c8e 100644
--- a/apps/api/src/app/app.module.ts
+++ b/apps/api/src/app/app.module.ts
@@ -53,6 +53,7 @@ import { UserModule } from './user/user.module';
     BenchmarkModule,
     BullModule.forRoot({
       redis: {
+        db: parseInt(process.env.REDIS_DB ?? '0', 10),
         host: process.env.REDIS_HOST,
         port: parseInt(process.env.REDIS_PORT ?? '6379', 10),
         password: process.env.REDIS_PASSWORD
diff --git a/apps/api/src/app/redis-cache/redis-cache.module.ts b/apps/api/src/app/redis-cache/redis-cache.module.ts
index 8acd644f6..4b4168168 100644
--- a/apps/api/src/app/redis-cache/redis-cache.module.ts
+++ b/apps/api/src/app/redis-cache/redis-cache.module.ts
@@ -15,6 +15,7 @@ import { RedisCacheService } from './redis-cache.service';
       inject: [ConfigurationService],
       useFactory: async (configurationService: ConfigurationService) => {
         return <RedisClientOptions>{
+          db: configurationService.get('REDIS_DB'),
           host: configurationService.get('REDIS_HOST'),
           max: configurationService.get('MAX_ITEM_IN_CACHE'),
           password: configurationService.get('REDIS_PASSWORD'),
diff --git a/apps/api/src/services/configuration/configuration.service.ts b/apps/api/src/services/configuration/configuration.service.ts
index 61a54daa1..eb82be418 100644
--- a/apps/api/src/services/configuration/configuration.service.ts
+++ b/apps/api/src/services/configuration/configuration.service.ts
@@ -43,6 +43,7 @@ export class ConfigurationService {
       MAX_ACTIVITIES_TO_IMPORT: num({ default: Number.MAX_SAFE_INTEGER }),
       MAX_ITEM_IN_CACHE: num({ default: 9999 }),
       PORT: port({ default: 3333 }),
+      REDIS_DB: num({ default: 0 }),
       REDIS_HOST: str({ default: 'localhost' }),
       REDIS_PASSWORD: str({ default: '' }),
       REDIS_PORT: port({ default: 6379 }),
diff --git a/apps/api/src/services/interfaces/environment.interface.ts b/apps/api/src/services/interfaces/environment.interface.ts
index 54abe22be..09d0b0e5d 100644
--- a/apps/api/src/services/interfaces/environment.interface.ts
+++ b/apps/api/src/services/interfaces/environment.interface.ts
@@ -30,6 +30,7 @@ export interface Environment extends CleanedEnvAccessors {
   MAX_ACTIVITIES_TO_IMPORT: number;
   MAX_ITEM_IN_CACHE: number;
   PORT: number;
+  REDIS_DB: number;
   REDIS_HOST: string;
   REDIS_PASSWORD: string;
   REDIS_PORT: number;