diff --git a/.gitignore b/.gitignore
index 4d174aa..4a82c50 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,19 +1,10 @@
-# Editor temporary files and local virtual environment.
 *.swp
 *~
 /.ve
-# Python caches.
 __pycache__
 /.pytest_cache
-# Coverage and documentation.
-/.coverage*
+/.coverage
 /htmlcov
 /docs/_build
-# Kingfisher
 /.env
-/error.log
-/info.log
-# SchemaSpy
-/postgresql.jar
-/schemaspy.jar
 /schemaspy
diff --git a/docs/_static/erd.png b/docs/_static/erd.png
index e34f56a..87004ac 100644
Binary files a/docs/_static/erd.png and b/docs/_static/erd.png differ
diff --git a/docs/database.rst b/docs/database.rst
index b218e47..dbec87f 100644
--- a/docs/database.rst
+++ b/docs/database.rst
@@ -40,8 +40,8 @@ If the ``release_type`` is "record", then the record's ``compiledRelease`` field
 
 Foreign key relationships exist on all `tables <https://www.postgresql.org/docs/current/sql-createtable.html>`__ (but not `views <https://www.postgresql.org/docs/current/sql-createview.html>`__) within a schema, as shown in the Entity Relationship Diagram (click on the image and zoom in to read more easily).
 
-.. image:: _static/erd.png
-   :target: _static/erd.png
+.. image:: _static/relationships.real.compact.png
+   :target: _static/relationships.real.compact.png
 
 This diagram can help to identify JOIN conditions. For example, all tables can be joined with the ``release_summary_no_data`` and ``release_summary`` tables on the ``id`` column.
 
diff --git a/docs/develop/howtos.rst b/docs/develop/howtos.rst
index b7f464e..cc2b44b 100644
--- a/docs/develop/howtos.rst
+++ b/docs/develop/howtos.rst
@@ -66,4 +66,9 @@ Add a schema with the ``--tables-only`` option:
 
     ./manage.py add 123 diagram --tables-only
 
-`Use SchemaSpy <https://ocp-software-handbook.readthedocs.io/en/latest/services/postgresql.html#entity-relationship-diagram>`__ to generate a diagram, copying the output to ``docs/_static/erd.png``.
+Then, `update <https://ocp-software-handbook.readthedocs.io/en/latest/services/postgresql.html#generate-entity-relationship-diagram>`__ the :ref:`erd`. For example:
+
+.. code-block:: bash
+
+   java -jar schemaspy.jar -t pgsql -dp postgresql.jar -o schemaspy -norows -host localhost -db kingfisher_summarize -s summary_collection_1 -u MYUSER
+   mv schemaspy/diagrams/summary/relationships.real.compact.png docs/_static/