diff --git a/.env b/.env
index 7e47048..6b94671 100644
--- a/.env
+++ b/.env
@@ -31,11 +31,6 @@ POSTGRES_DB=app
 POSTGRES_USER=postgres
 POSTGRES_PASSWORD=changethis
 
-# PgAdmin
-PGADMIN_DEFAULT_EMAIL=admin@example.com
-PGADMIN_DEFAULT_PASSWORD=changethis
-PGADMIN_LISTEN_PORT=5050
-
 SENTRY_DSN=
 
 # Flower
diff --git a/.github/workflows/deploy-production.yml b/.github/workflows/deploy-production.yml
index dd8303a..13ab1c5 100644
--- a/.github/workflows/deploy-production.yml
+++ b/.github/workflows/deploy-production.yml
@@ -21,8 +21,6 @@ jobs:
       SMTP_PASSWORD: ${{ secrets.SMTP_PASSWORD }}
       EMAILS_FROM_EMAIL: ${{ secrets.EMAILS_FROM_EMAIL }}
       POSTGRES_PASSWORD: ${{ secrets.POSTGRES_PASSWORD }}
-      PGADMIN_DEFAULT_EMAIL: ${{ secrets.PGADMIN_DEFAULT_EMAIL }}
-      PGADMIN_DEFAULT_PASSWORD: ${{ secrets.PGADMIN_DEFAULT_PASSWORD }}
       SENTRY_DSN: ${{ secrets.SENTRY_DSN }}
       FLOWER_BASIC_AUTH: ${{ secrets.FLOWER_BASIC_AUTH }}
     steps:
diff --git a/.github/workflows/deploy-staging.yml b/.github/workflows/deploy-staging.yml
index c476dda..069f038 100644
--- a/.github/workflows/deploy-staging.yml
+++ b/.github/workflows/deploy-staging.yml
@@ -21,8 +21,6 @@ jobs:
       SMTP_PASSWORD: ${{ secrets.SMTP_PASSWORD }}
       EMAILS_FROM_EMAIL: ${{ secrets.EMAILS_FROM_EMAIL }}
       POSTGRES_PASSWORD: ${{ secrets.POSTGRES_PASSWORD }}
-      PGADMIN_DEFAULT_EMAIL: ${{ secrets.PGADMIN_DEFAULT_EMAIL }}
-      PGADMIN_DEFAULT_PASSWORD: ${{ secrets.PGADMIN_DEFAULT_PASSWORD }}
       SENTRY_DSN: ${{ secrets.SENTRY_DSN }}
       FLOWER_BASIC_AUTH: ${{ secrets.FLOWER_BASIC_AUTH }}
     steps:
diff --git a/README.md b/README.md
index cb5b171..89a275c 100644
--- a/README.md
+++ b/README.md
@@ -154,8 +154,6 @@ The input variables, with their default values (some auto generated) are:
 - `smtp_password`: (default: "") The SMTP server password to send emails, you can set it later in .env.
 - `emails_from_email`: (default: `"info@example.com"`) The email account to send emails from, you can set it later in .env.
 - `postgres_password`: (default: `"changethis"`) The password for the PostgreSQL database, stored in .env, you can generate one with the method above.
-- `pgadmin_default_user`: (default: `"admin"`) The default user for pgAdmin, you can set it later in .env.
-- `pgadmin_default_password`: (default: `"changethis"`) The default user password for pgAdmin, stored in .env.
 - `sentry_dsn`: (default: "") The DSN for Sentry, if you are using it, you can set it later in .env.
 - `flower_basic_auth`: (default: `"admin:changethis"`) The basic auth for Flower, you can set it later in .env.
 
diff --git a/backend/README.md b/backend/README.md
index ad37dec..f603c00 100644
--- a/backend/README.md
+++ b/backend/README.md
@@ -21,7 +21,7 @@ Backend, JSON based web API based on OpenAPI: http://localhost/api/
 
 Automatic interactive documentation with Swagger UI (from the OpenAPI backend): http://localhost/docs
 
-PGAdmin, PostgreSQL web administration: http://localhost:5050
+Adminer, database web administration: http://localhost:8080
 
 Flower, administration of Celery tasks: http://localhost:5555
 
diff --git a/copier.yml b/copier.yml
index 7ea135d..204a0bf 100644
--- a/copier.yml
+++ b/copier.yml
@@ -54,16 +54,6 @@ postgres_password:
     python -c "import secrets; print(secrets.token_urlsafe(32))"'
   default: changethis
 
-pgadmin_default_email:
-  type: str
-  help: The default user email for pgAdmin, you can set it later in .env
-  default: admin@example.com
-
-pgadmin_default_password:
-  type: str
-  help: The default user password for pgAdmin, stored in .env
-  default: changethis
-
 sentry_dsn:
   type: str
   help: The DSN for Sentry, if you are using it, you can set it later in .env
diff --git a/deployment.md b/deployment.md
index 4ea39eb..e16bcbc 100644
--- a/deployment.md
+++ b/deployment.md
@@ -12,7 +12,7 @@ But you have to configure a couple things first. 🤓
 
 * Have a remote server ready and available.
 * Configure the DNS records of your domain to point to the IP of the server you just created.
-* Configure a wildcard subdomain for your domain, so that you can have multiple subdomains for different services, e.g. `*.fastapi-project.example.com`. This will be useful for accessing different components, like `traefik.fastapi-project.example.com`, `pgadmin.fastapi-project.example.com`, etc. And also for `staging`, like `staging.fastapi-project.example.com`, `staging.pgadmin.fastapi-project.example.com`, etc.
+* Configure a wildcard subdomain for your domain, so that you can have multiple subdomains for different services, e.g. `*.fastapi-project.example.com`. This will be useful for accessing different components, like `traefik.fastapi-project.example.com`, `adminer.fastapi-project.example.com`, etc. And also for `staging`, like `staging.fastapi-project.example.com`, `staging.adminer.fastapi-project.example.com`, etc.
 * Install and configure [Docker](https://docs.docker.com/engine/install/) on the remote server (Docker Engine, not Docker Desktop).
 
 ## Public Traefik
@@ -141,8 +141,6 @@ You can set several variables, like:
 * `POSTGRES_PASSWORD`: The Postgres password.
 * `POSTGRES_USER`: The Postgres user, you can leave the default.
 * `POSTGRES_DB`: The database name to use for this application. You can leave the default of `app`.
-* `PGADMIN_DEFAULT_EMAIL`: The default email for pgAdmin.
-* `PGADMIN_DEFAULT_PASSWORD`: The default password for pgAdmin.
 * `SENTRY_DSN`: The DSN for Sentry, if you are using it.
 * `FLOWER_BASIC_AUTH`: The HTTP Basic Auth for Flower, like `admin:changethis`.
 
@@ -253,8 +251,6 @@ The current Github Actions workflows expect these secrets:
 * `EMAILS_FROM_EMAIL`
 * `FIRST_SUPERUSER`
 * `FIRST_SUPERUSER_PASSWORD`
-* `PGADMIN_DEFAULT_EMAIL`
-* `PGADMIN_DEFAULT_PASSWORD`
 * `POSTGRES_PASSWORD`
 * `SECRET_KEY`
 
@@ -283,7 +279,7 @@ Backend API docs: `https://fastapi-project.example.com/docs`
 
 Backend API base URL: `https://fastapi-project.example.com/api/`
 
-PGAdmin: `https://pgadmin.fastapi-project.example.com`
+Adminer: `https://adminer.fastapi-project.example.com`
 
 Flower: `https://flower.fastapi-project.example.com`
 
@@ -295,6 +291,6 @@ Backend API docs: `https://staging.fastapi-project.example.com/docs`
 
 Backend API base URL: `https://staging.fastapi-project.example.com/api/`
 
-PGAdmin: `https://staging.pgadmin.fastapi-project.example.com`
+Adminer: `https://staging.adminer.fastapi-project.example.com`
 
 Flower: `https://staging.flower.fastapi-project.example.com`
diff --git a/development.md b/development.md
index ad76dc1..0c69714 100644
--- a/development.md
+++ b/development.md
@@ -107,7 +107,7 @@ Automatic Interactive Docs (Swagger UI): https://localhost/docs
 
 Automatic Alternative Docs (ReDoc): https://localhost/redoc
 
-PGAdmin: http://localhost:5050
+Adminer: http://localhost:8080
 
 Flower: http://localhost:5555
 
@@ -125,7 +125,7 @@ Automatic Interactive Docs (Swagger UI): https://localhost.tiangolo.com/docs
 
 Automatic Alternative Docs (ReDoc): https://localhost.tiangolo.com/redoc
 
-PGAdmin: http://localhost.tiangolo.com:5050
+Adminer: http://localhost.tiangolo.com:8080
 
 Flower: http://localhost.tiangolo.com:5555
 
diff --git a/docker-compose.override.yml b/docker-compose.override.yml
index 12917aa..5e04c58 100644
--- a/docker-compose.override.yml
+++ b/docker-compose.override.yml
@@ -43,10 +43,10 @@ services:
     ports:
       - "5432:5432"
 
-  pgadmin:
+  adminer:
     restart: "no"
     ports:
-      - "5050:5050"
+      - "8080:8080"
 
   queue:
     restart: "no"
diff --git a/docker-compose.yml b/docker-compose.yml
index fe3eab3..03f43f5 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -13,31 +13,28 @@ services:
       - POSTGRES_USER=${POSTGRES_USER?Variable not set}
       - POSTGRES_DB=${POSTGRES_DB?Variable not set}
 
-  pgadmin:
-    image: dpage/pgadmin4
+  adminer:
+    image: adminer
     restart: always
     networks:
       - traefik-public
       - default
     depends_on:
       - db
-    env_file:
-      - .env
     environment:
-      - PGADMIN_DEFAULT_EMAIL=${PGADMIN_DEFAULT_EMAIL}
-      - PGADMIN_DEFAULT_PASSWORD=${PGADMIN_DEFAULT_PASSWORD}
+      - ADMINER_DESIGN=pepa-linha-dark
     labels:
       - traefik.enable=true
       - traefik.docker.network=traefik-public
       - traefik.constraint-label=traefik-public
-      - traefik.http.routers.${STACK_NAME?Variable not set}-pgadmin-http.rule=Host(`pgadmin.${DOMAIN?Variable not set}`)
-      - traefik.http.routers.${STACK_NAME?Variable not set}-pgadmin-http.entrypoints=http
-      - traefik.http.routers.${STACK_NAME?Variable not set}-pgadmin-http.middlewares=https-redirect
-      - traefik.http.routers.${STACK_NAME?Variable not set}-pgadmin-https.rule=Host(`pgadmin.${DOMAIN?Variable not set}`)
-      - traefik.http.routers.${STACK_NAME?Variable not set}-pgadmin-https.entrypoints=https
-      - traefik.http.routers.${STACK_NAME?Variable not set}-pgadmin-https.tls=true
-      - traefik.http.routers.${STACK_NAME?Variable not set}-pgadmin-https.tls.certresolver=le
-      - traefik.http.services.${STACK_NAME?Variable not set}-pgadmin.loadbalancer.server.port=5050
+      - traefik.http.routers.${STACK_NAME?Variable not set}-adminer-http.rule=Host(`adminer.${DOMAIN?Variable not set}`)
+      - traefik.http.routers.${STACK_NAME?Variable not set}-adminer-http.entrypoints=http
+      - traefik.http.routers.${STACK_NAME?Variable not set}-adminer-http.middlewares=https-redirect
+      - traefik.http.routers.${STACK_NAME?Variable not set}-adminer-https.rule=Host(`adminer.${DOMAIN?Variable not set}`)
+      - traefik.http.routers.${STACK_NAME?Variable not set}-adminer-https.entrypoints=https
+      - traefik.http.routers.${STACK_NAME?Variable not set}-adminer-https.tls=true
+      - traefik.http.routers.${STACK_NAME?Variable not set}-adminer-https.tls.certresolver=le
+      - traefik.http.services.${STACK_NAME?Variable not set}-adminer.loadbalancer.server.port=8080
 
   queue:
     image: rabbitmq:3