diff --git a/.env.sample b/.env.sample
index 6b7b052..8d09deb 100644
--- a/.env.sample
+++ b/.env.sample
@@ -1,5 +1,6 @@
 export DATABASE_URL=postgres://postgres:postgres@localhost:5432/go_escuela_lms_development
 export TEST_DATABASE_URL=postgres://postgres:postgres@localhost:5432/go_escuela_lms_test
 export SECRET_AUTH_KEY=secret123
+export SECRET_KEY_BASE=
 export GOOGLE_API_CREDENTIALS=
 export GOOGLE_BUCKET=
\ No newline at end of file
diff --git a/config/dev.exs b/config/dev.exs
index b0e6a62..457977c 100644
--- a/config/dev.exs
+++ b/config/dev.exs
@@ -13,7 +13,7 @@ config :web, Web.Endpoint,
   check_origin: false,
   code_reloader: true,
   debug_errors: true,
-  secret_key_base: "xj5hlrtrUPTI8a4Odh00U0yHeUXNtj2RaBk8UMWvt1xPlgg4iwTP54Z69J7ug4io",
+  secret_key_base: System.get_env("SECRET_KEY_BASE"),
   watchers: []
 
 # ## SSL Support
diff --git a/config/prod.exs b/config/prod.exs
index 107187c..4e29ff8 100644
--- a/config/prod.exs
+++ b/config/prod.exs
@@ -5,6 +5,4 @@ import Config
 # manifest is generated by the `mix phx.digest` task,
 # which you should run after static files are built and
 # before starting your production server.
-config :web, Web.Endpoint,
-  url: [host: "example.com", port: 80],
-  cache_static_manifest: "priv/static/cache_manifest.json"
+config :web, Web.Endpoint, url: [host: "example.com", port: 80]
diff --git a/config/runtime.exs b/config/runtime.exs
index e673477..21ffa0e 100644
--- a/config/runtime.exs
+++ b/config/runtime.exs
@@ -24,6 +24,11 @@ if config_env() == :prod do
     ],
     secret_key_base: secret_key_base
 
+  config :core, GoEscuelaLms.Core.Repo,
+    url: System.get_env("DATABASE_URL"),
+    show_sensitive_data_on_connection_error: true,
+    pool_size: 2
+
   # ## Using releases
   #
   # If you are doing OTP releases, you need to instruct Phoenix
diff --git a/elixir_buildpack.config b/elixir_buildpack.config
new file mode 100644
index 0000000..9b60c4b
--- /dev/null
+++ b/elixir_buildpack.config
@@ -0,0 +1,2 @@
+elixir_version=1.16.1
+erlang_version=26.2.2