diff --git a/docs/api.rst b/docs/api.rst
index 68a6a02..c0a6a0b 100644
--- a/docs/api.rst
+++ b/docs/api.rst
@@ -2,14 +2,21 @@ API
 ===
 
 etlhelper
----------
+^^^^^^^^^
 
 .. automodule:: etlhelper
     :members:
 
 
 etlhelper.row_factories
------------------------
+^^^^^^^^^^^^^^^^^^^^^^^
 
 .. automodule:: etlhelper.row_factories
     :members:
+
+
+etlhelper.db_helpers
+^^^^^^^^^^^^^^^^^^^^^^^
+
+.. automodule:: etlhelper.db_helpers
+    :members:
diff --git a/etlhelper/db_helpers/__init__.py b/etlhelper/db_helpers/__init__.py
index d6c671e..0e5e985 100644
--- a/etlhelper/db_helpers/__init__.py
+++ b/etlhelper/db_helpers/__init__.py
@@ -1,5 +1,8 @@
 """
-init db_helpers
+DbHelper classes are used behind-the-scenes for customising the behaviour of
+different database drivers.
+
+For more details, see the source code in each module.
 """
 # flake8: noqa
 from etlhelper.db_helpers.oracle import OracleDbHelper