diff --git a/docs/developing-locally-docker.rst b/docs/developing-locally-docker.rst
index f83baf81..7cbf9ae9 100644
--- a/docs/developing-locally-docker.rst
+++ b/docs/developing-locally-docker.rst
@@ -119,6 +119,12 @@ Consider the aforementioned ``.envs/.local/.postgres``: ::
 
 The three envs we are presented with here are ``POSTGRES_DB``, ``POSTGRES_USER``, and ``POSTGRES_PASSWORD`` (by the way, their values have also been generated for you). You might have figured out already where these definitions will end up; it's all the same with ``django`` and ``caddy`` service container envs.
 
+One final touch: should you ever need to merge ``.envs/production/*`` in a single ``.env`` run the ``merge_production_dotenvs_in_dotenv.py``: ::
+
+    $ python merge_production_dotenvs_in_dotenv.py
+
+The ``.env`` file will then be created, with all your production envs residing beside each other.
+
 
 Tips & Tricks
 -------------