diff --git a/config/config.exs b/config/config.exs
index 1c5c431..3997642 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -7,12 +7,12 @@
 # General application configuration
 import Config
 
-config :JOL,
+config :jol,
   ecto_repos: [JOL.Repo],
   generators: [timestamp_type: :utc_datetime]
 
 # Configures the endpoint
-config :JOL, JOLWeb.Endpoint,
+config :jol, JOLWeb.Endpoint,
   url: [host: "localhost"],
   adapter: Bandit.PhoenixAdapter,
   render_errors: [
@@ -29,7 +29,7 @@ config :JOL, JOLWeb.Endpoint,
 #
 # For production it's recommended to configure a different adapter
 # at the `config/runtime.exs`.
-config :JOL, JOL.Mailer, adapter: Swoosh.Adapters.Local
+config :jol, JOL.Mailer, adapter: Swoosh.Adapters.Local
 
 # Configure esbuild (the version is required)
 config :esbuild,
diff --git a/config/dev.exs b/config/dev.exs
index 87dcead..333e1b1 100644
--- a/config/dev.exs
+++ b/config/dev.exs
@@ -1,7 +1,7 @@
 import Config
 
 # Configure your database
-config :JOL, JOL.Repo,
+config :jol, JOL.Repo,
   username: "postgres",
   password: "postgres",
   hostname: "localhost",
@@ -16,7 +16,7 @@ config :JOL, JOL.Repo,
 # The watchers configuration can be used to run external
 # watchers to your application. For example, we can use it
 # to bundle .js and .css sources.
-config :JOL, JOLWeb.Endpoint,
+config :jol, JOLWeb.Endpoint,
   # Binding to loopback ipv4 address prevents access from other machines.
   # Change to `ip: {0, 0, 0, 0}` to allow access from other machines.
   http: [ip: {127, 0, 0, 1}, port: 4000],
@@ -25,8 +25,8 @@ config :JOL, JOLWeb.Endpoint,
   debug_errors: true,
   secret_key_base: "9rmK754o3RoBXorXcCf0PTZkCJbfAOdNGyXSQizgF5CYcd9iQTR2UhaNGw5v74DR",
   watchers: [
-    esbuild: {Esbuild, :install_and_run, [:JOL, ~w(--sourcemap=inline --watch)]},
-    tailwind: {Tailwind, :install_and_run, [:JOL, ~w(--watch)]}
+    esbuild: {Esbuild, :install_and_run, [:jol, ~w(--sourcemap=inline --watch)]},
+    tailwind: {Tailwind, :install_and_run, [:jol, ~w(--watch)]}
   ]
 
 # ## SSL Support
@@ -53,7 +53,7 @@ config :JOL, JOLWeb.Endpoint,
 # different ports.
 
 # Watch static and templates for browser reloading.
-config :JOL, JOLWeb.Endpoint,
+config :jol, JOLWeb.Endpoint,
   live_reload: [
     patterns: [
       ~r"priv/static/(?!uploads/).*(js|css|png|jpeg|jpg|gif|svg)$",
@@ -63,7 +63,7 @@ config :JOL, JOLWeb.Endpoint,
   ]
 
 # Enable dev routes for dashboard and mailbox
-config :JOL, dev_routes: true
+config :jol, dev_routes: true
 
 # Do not include metadata nor timestamps in development logs
 config :logger, :console, format: "[$level] $message\n"
diff --git a/config/prod.exs b/config/prod.exs
index 7084927..b1ba141 100644
--- a/config/prod.exs
+++ b/config/prod.exs
@@ -5,7 +5,7 @@ import Config
 # manifest is generated by the `mix assets.deploy` task,
 # which you should run after static files are built and
 # before starting your production server.
-config :JOL, JOLWeb.Endpoint, cache_static_manifest: "priv/static/cache_manifest.json"
+config :jol, JOLWeb.Endpoint, cache_static_manifest: "priv/static/cache_manifest.json"
 
 # Configures Swoosh API Client
 config :swoosh, api_client: Swoosh.ApiClient.Finch, finch_name: JOL.Finch
diff --git a/config/runtime.exs b/config/runtime.exs
index 425f5f3..df90b09 100644
--- a/config/runtime.exs
+++ b/config/runtime.exs
@@ -17,7 +17,7 @@ import Config
 # Alternatively, you can use `mix phx.gen.release` to generate a `bin/server`
 # script that automatically sets the env var above.
 if System.get_env("PHX_SERVER") do
-  config :JOL, JOLWeb.Endpoint, server: true
+  config :jol, JOLWeb.Endpoint, server: true
 end
 
 if config_env() == :prod do
@@ -30,7 +30,7 @@ if config_env() == :prod do
 
   maybe_ipv6 = if System.get_env("ECTO_IPV6") in ~w(true 1), do: [:inet6], else: []
 
-  config :JOL, JOL.Repo,
+  config :jol, JOL.Repo,
     # ssl: true,
     url: database_url,
     pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10"),
@@ -51,9 +51,9 @@ if config_env() == :prod do
   host = System.get_env("PHX_HOST") || "example.com"
   port = String.to_integer(System.get_env("PORT") || "4000")
 
-  config :JOL, :dns_cluster_query, System.get_env("DNS_CLUSTER_QUERY")
+  config :jol, :dns_cluster_query, System.get_env("DNS_CLUSTER_QUERY")
 
-  config :JOL, JOLWeb.Endpoint,
+  config :jol, JOLWeb.Endpoint,
     url: [host: host, port: 443, scheme: "https"],
     http: [
       # Enable IPv6 and bind on all interfaces.
@@ -70,7 +70,7 @@ if config_env() == :prod do
   # To get SSL working, you will need to add the `https` key
   # to your endpoint configuration:
   #
-  #     config :JOL, JOLWeb.Endpoint,
+  #     config :jol, JOLWeb.Endpoint,
   #       https: [
   #         ...,
   #         port: 443,
@@ -92,7 +92,7 @@ if config_env() == :prod do
   # We also recommend setting `force_ssl` in your config/prod.exs,
   # ensuring no data is ever sent via http, always redirecting to https:
   #
-  #     config :JOL, JOLWeb.Endpoint,
+  #     config :jol, JOLWeb.Endpoint,
   #       force_ssl: [hsts: true]
   #
   # Check `Plug.SSL` for all available options in `force_ssl`.
@@ -103,7 +103,7 @@ if config_env() == :prod do
   # Also, you may need to configure the Swoosh API client of your choice if you
   # are not using SMTP. Here is an example of the configuration:
   #
-  #     config :JOL, JOL.Mailer,
+  #     config :jol, JOL.Mailer,
   #       adapter: Swoosh.Adapters.Mailgun,
   #       api_key: System.get_env("MAILGUN_API_KEY"),
   #       domain: System.get_env("MAILGUN_DOMAIN")
diff --git a/config/test.exs b/config/test.exs
index d252be3..e28474f 100644
--- a/config/test.exs
+++ b/config/test.exs
@@ -5,7 +5,7 @@ import Config
 # The MIX_TEST_PARTITION environment variable can be used
 # to provide built-in test partitioning in CI environment.
 # Run `mix help test` for more information.
-config :JOL, JOL.Repo,
+config :jol, JOL.Repo,
   username: "postgres",
   password: "postgres",
   hostname: "localhost",
@@ -15,13 +15,13 @@ config :JOL, JOL.Repo,
 
 # We don't run a server during test. If one is required,
 # you can enable the server option below.
-config :JOL, JOLWeb.Endpoint,
+config :jol, JOLWeb.Endpoint,
   http: [ip: {127, 0, 0, 1}, port: 4002],
   secret_key_base: "TcmWd6GafOT64XVzHiK6e6Yub8o8jhoi4gMK5K4PlAXyD7nfwzjsutXiMDifprgw",
   server: false
 
 # In test we don't send emails.
-config :JOL, JOL.Mailer, adapter: Swoosh.Adapters.Test
+config :jol, JOL.Mailer, adapter: Swoosh.Adapters.Test
 
 # Disable swoosh api client as it is only required for production adapters.
 config :swoosh, :api_client, false
diff --git a/lib/jol/application.ex b/lib/jol/application.ex
index f53f863..4cc2155 100644
--- a/lib/jol/application.ex
+++ b/lib/jol/application.ex
@@ -10,7 +10,7 @@ defmodule JOL.Application do
     children = [
       JOLWeb.Telemetry,
       JOL.Repo,
-      {DNSCluster, query: Application.get_env(:JOL, :dns_cluster_query) || :ignore},
+      {DNSCluster, query: Application.get_env(:jol, :dns_cluster_query) || :ignore},
       {Phoenix.PubSub, name: JOL.PubSub},
       # Start the Finch HTTP client for sending emails
       {Finch, name: JOL.Finch},
diff --git a/lib/jol/blog.ex b/lib/jol/blog.ex
index fb77cc8..64505b8 100644
--- a/lib/jol/blog.ex
+++ b/lib/jol/blog.ex
@@ -3,7 +3,7 @@ defmodule JOL.Blog do
 
   use NimblePublisher,
     build: Post,
-    from: Application.app_dir(:JOL, "priv/posts/**/*.md"),
+    from: Application.app_dir(:jol, "priv/posts/**/*.md"),
     as: :posts
 
   @posts Enum.sort_by(@posts, & &1.date, {:desc, Date})
diff --git a/lib/jol/mailer.ex b/lib/jol/mailer.ex
index 2712799..5f0945b 100644
--- a/lib/jol/mailer.ex
+++ b/lib/jol/mailer.ex
@@ -1,3 +1,3 @@
 defmodule JOL.Mailer do
-  use Swoosh.Mailer, otp_app: :JOL
+  use Swoosh.Mailer, otp_app: :jol
 end
diff --git a/lib/jol/repo.ex b/lib/jol/repo.ex
index b6001a9..81dc31a 100644
--- a/lib/jol/repo.ex
+++ b/lib/jol/repo.ex
@@ -1,5 +1,5 @@
 defmodule JOL.Repo do
   use Ecto.Repo,
-    otp_app: :JOL,
+    otp_app: :jol,
     adapter: Ecto.Adapters.Postgres
 end
diff --git a/lib/jol_web/endpoint.ex b/lib/jol_web/endpoint.ex
index 26f37b3..14bd7f1 100644
--- a/lib/jol_web/endpoint.ex
+++ b/lib/jol_web/endpoint.ex
@@ -1,5 +1,5 @@
 defmodule JOLWeb.Endpoint do
-  use Phoenix.Endpoint, otp_app: :JOL
+  use Phoenix.Endpoint, otp_app: :jol
 
   # The session will be stored in the cookie and signed,
   # this means its contents can be read but not tampered with.
@@ -21,7 +21,7 @@ defmodule JOLWeb.Endpoint do
   # when deploying your static files in production.
   plug Plug.Static,
     at: "/",
-    from: :JOL,
+    from: :jol,
     gzip: false,
     only: JOLWeb.static_paths()
 
@@ -31,7 +31,7 @@ defmodule JOLWeb.Endpoint do
     socket "/phoenix/live_reload/socket", Phoenix.LiveReloader.Socket
     plug Phoenix.LiveReloader
     plug Phoenix.CodeReloader
-    plug Phoenix.Ecto.CheckRepoStatus, otp_app: :JOL
+    plug Phoenix.Ecto.CheckRepoStatus, otp_app: :jol
   end
 
   plug Phoenix.LiveDashboard.RequestLogger,
diff --git a/lib/jol_web/gettext.ex b/lib/jol_web/gettext.ex
index 6b3d14f..eb5cd78 100644
--- a/lib/jol_web/gettext.ex
+++ b/lib/jol_web/gettext.ex
@@ -20,5 +20,5 @@ defmodule JOLWeb.Gettext do
 
   See the [Gettext Docs](https://hexdocs.pm/gettext) for detailed usage.
   """
-  use Gettext, otp_app: :JOL
+  use Gettext, otp_app: :jol
 end
diff --git a/lib/jol_web/router.ex b/lib/jol_web/router.ex
index 4555eb4..b30e113 100644
--- a/lib/jol_web/router.ex
+++ b/lib/jol_web/router.ex
@@ -26,7 +26,7 @@ defmodule JOLWeb.Router do
   # end
 
   # Enable LiveDashboard and Swoosh mailbox preview in development
-  if Application.compile_env(:JOL, :dev_routes) do
+  if Application.compile_env(:jol, :dev_routes) do
     # If you want to use the LiveDashboard in production, you should put
     # it behind authentication and allow only admins to access it.
     # If your application does not have an admins-only section yet,
diff --git a/mix.exs b/mix.exs
index 83918be..12b5e2b 100644
--- a/mix.exs
+++ b/mix.exs
@@ -3,7 +3,7 @@ defmodule JOL.MixProject do
 
   def project do
     [
-      app: :JOL,
+      app: :jol,
       version: "0.1.0",
       elixir: "~> 1.14",
       elixirc_paths: elixirc_paths(Mix.env()),