diff --git a/README.md b/README.md
index dfdb982..4267835 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ Practices](https://www.bestpractices.dev/projects/9956/badge)](https://www.bestp
 [![release](https://shields.io/github/release-date/btschwertfeger/kraken-infinity-grid)](https://github.com/btschwertfeger/kraken-infinity-grid/releases)
 [![release](https://img.shields.io/pypi/v/kraken-infinity-grid)](https://pypi.org/project/kraken-infinity-grid/)
 [![Documentation Status Stable](https://readthedocs.org/projects/kraken-infinity-grid/badge/?version=stable)](https://kraken-infinity-grid.readthedocs.io/en/stable)
+[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.14735203.svg)](https://doi.org/10.5281/zenodo.14735203)
 
 </div>
 
@@ -407,6 +408,8 @@ current state of the algorithm via Telegram Bots (see
   calculation is based on timestamps and a sent nonce must always be the highest
   nonce ever sent of that API key. Having multiple algorithms using the same
   keys will result in invalid nonce errors.
+- Always keep an eye on https://status.kraken.com/ when encountering
+  connectivity problems.
 
 ---
 
diff --git a/doc/index.rst b/doc/index.rst
index d9e7785..edef2a1 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -9,7 +9,7 @@ Welcome to kraken-infinity-grid's documentation!
 
 |GitHub badge| |PyVersions badge| |Downloads badge|
 |CI/CD badge| |Typing badge| |codecov badge|
-|Release date badge| |Release version badge|
+|Release date badge| |Release version badge| |DOI badge|
 
 .. toctree::
    :caption: Contents:
diff --git a/doc/introduction.rst b/doc/introduction.rst
index 9d11c2d..cd72b73 100644
--- a/doc/introduction.rst
+++ b/doc/introduction.rst
@@ -7,7 +7,7 @@ Introduction
 
 |GitHub badge| |PyVersions badge| |Downloads badge|
 |CI/CD badge| |Typing badge| |codecov badge|
-|Release date badge| |Release version badge|
+|Release date badge| |Release version badge| |DOI badge|
 
 
 Disclaimer
@@ -65,9 +65,10 @@ Troubleshooting
   calculation is based on timestamps and a sent nonce must always be the highest
   nonce ever sent of that API key. Having multiple algorithms using the same
   keys will result in invalid nonce errors.
+- Always keep an eye on https://status.kraken.com/ when encountering
+  connectivity problems.
 - Feel free to open an issue at `kraken-infinity-grid/issues`_.
 
-
 References
 ----------
 
diff --git a/doc/links.rst b/doc/links.rst
index 48f839e..1102d79 100644
--- a/doc/links.rst
+++ b/doc/links.rst
@@ -42,3 +42,6 @@
 .. |Docs stable|               image:: https://readthedocs.org/projects/kraken-infinity-grid/badge/?version=stable
                               :target: https://kraken-infinity-grid.readthedocs.io/en/stable
                               :alt:    Documentation status stable
+.. |DOI badge|                 image:: https://zenodo.org/badge/DOI/10.5281/zenodo.14735203.svg
+                              :target: https://doi.org/10.5281/zenodo.14735203
+                              :alt:    Zenodo DOI
diff --git a/docker-compose.yaml b/docker-compose.yaml
index 4ed6b62..d9e5e58 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -3,6 +3,18 @@
 # GitHub: https://github.com/btschwertfeger
 #
 
+# This Docker Compose file creates a PostgreSQL and kraken-infinity-grid
+# container.
+#
+# In order to use this file to run the trading algorithm, a few environment
+# variables must be set, see
+# https://kraken-infinity-grid.readthedocs.io/en/latest/configuration.html#environment-variables
+# for more information.
+#
+# Note: For running multiple instances of the kraken-infinity-grid in parallel,
+# you can simply duplicate and configure the service, as it supports sharing the
+# same database.
+
 services:
   postgresql:
     image: postgres:13-bookworm
diff --git a/pyproject.toml b/pyproject.toml
index 79ef37e..4bffa30 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -91,13 +91,15 @@ asyncio_default_fixture_loop_scope = "function"
 
 [tool.coverage.run]
 source = ["."]
-
 omit = ["*tests*", "_version.py"]
 
 [tool.coverage.report]
 exclude_lines = ["coverage: disable", "if TYPE_CHECKING:"]
 skip_empty = true
 
+[tool.codespell]
+check-filenames = true
+
 # ========= T Y P I N G ========================================================
 #
 [tool.mypy]