diff --git a/config/prod.exs b/config/prod.exs
index 90eb86f..746a707 100644
--- a/config/prod.exs
+++ b/config/prod.exs
@@ -1,61 +1,63 @@
 use Mix.Config
 
 # For production, we configure the host to read the PORT
 # from the system environment. Therefore, you will need
 # to set PORT=80 before running your server.
 #
 # You should also configure the url host to something
 # meaningful, we use this information when generating URLs.
 #
 # Finally, we also include the path to a manifest
 # containing the digested version of static files. This
 # manifest is generated by the mix phoenix.digest task
 # which you typically run after static files are built.
 config :kolab_chat, KolabChat.Endpoint,
   http: [port: {:system, "PORT"}],
   url: [host: "example.com", port: 80],
   cache_static_manifest: "priv/static/manifest.json"
 
 # Do not print debug messages in production
-config :logger, level: :info
+config :logger,
+    level: :info,
+    compile_time_purge_level: :warn
 
 # ## SSL Support
 #
 # To get SSL working, you will need to add the `https` key
 # to the previous section and set your `:url` port to 443:
 #
 #     config :kolab_chat, KolabChat.Endpoint,
 #       ...
 #       url: [host: "example.com", port: 443],
 #       https: [port: 443,
 #               keyfile: System.get_env("SOME_APP_SSL_KEY_PATH"),
 #               certfile: System.get_env("SOME_APP_SSL_CERT_PATH")]
 #
 # Where those two env variables return an absolute path to
 # the key and cert in disk or a relative path inside priv,
 # for example "priv/ssl/server.key".
 #
 # We also recommend setting `force_ssl`, ensuring no data is
 # ever sent via http, always redirecting to https:
 #
 #     config :kolab_chat, KolabChat.Endpoint,
 #       force_ssl: [hsts: true]
 #
 # Check `Plug.SSL` for all available options in `force_ssl`.
 
 # ## Using releases
 #
 # If you are doing OTP releases, you need to instruct Phoenix
 # to start the server for all endpoints:
 #
 #     config :phoenix, :serve_endpoints, true
 #
 # Alternatively, you can configure exactly which server to
 # start per endpoint:
 #
 #     config :kolab_chat, KolabChat.Endpoint, server: true
 #
 
 # Finally import the config/prod.secret.exs
 # which should be versioned separately.
 import_config "prod.secret.exs"