diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0013dfa07..a4862d727 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -76,7 +76,9 @@ jobs:
           python-version: 3.11
           cache: 'poetry'
       - name: Install Python dependencies
-        run: poetry install
+        run: |
+          sudo apt-get install --yes --quiet --no-install-recommends graphviz libgraphviz-dev
+          poetry install
       - name: System checks
         run: poetry run ./manage.py check
       - name: Check for missing migrations
diff --git a/Dockerfile b/Dockerfile
index 21bcdae1a..dc3463fa1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -58,6 +58,12 @@ ENV PATH=$VIRTUAL_ENV/bin:$PATH \
 ARG BUILD_ENV
 ENV BUILD_ENV=${BUILD_ENV}
 
+# install graphviz only in dev environment
+RUN if [ "$BUILD_ENV" = "dev" ] ; then \
+    apt-get update --yes --quiet && apt-get install --yes --quiet --no-install-recommends \
+    graphviz libgraphviz-dev \
+    && apt-get autoremove && rm -rf /var/lib/apt/lists/* ; \
+    fi
 
 # Port exposed by this container. Should default to the port used by your WSGI
 # server (Gunicorn). This is read by Dokku only. Heroku will ignore this.
diff --git a/poetry.lock b/poetry.lock
index 0482c734b..ac0d22306 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -590,13 +590,13 @@ sqlparse = ">=0.2"
 
 [[package]]
 name = "django-extensions"
-version = "3.2.1"
+version = "3.2.3"
 description = "Extensions for Django"
 optional = false
 python-versions = ">=3.6"
 files = [
-    {file = "django-extensions-3.2.1.tar.gz", hash = "sha256:2a4f4d757be2563cd1ff7cfdf2e57468f5f931cc88b23cf82ca75717aae504a4"},
-    {file = "django_extensions-3.2.1-py3-none-any.whl", hash = "sha256:421464be390289513f86cb5e18eb43e5dc1de8b4c27ba9faa3b91261b0d67e09"},
+    {file = "django-extensions-3.2.3.tar.gz", hash = "sha256:44d27919d04e23b3f40231c4ab7af4e61ce832ef46d610cc650d53e68328410a"},
+    {file = "django_extensions-3.2.3-py3-none-any.whl", hash = "sha256:9600b7562f79a92cbf1fde6403c04fee314608fefbb595502e34383ae8203401"},
 ]
 
 [package.dependencies]
@@ -1697,6 +1697,20 @@ files = [
     {file = "pycparser-2.21.tar.gz", hash = "sha256:e644fdec12f7872f86c58ff790da456218b10f863970249516d60a5eaca77206"},
 ]
 
+[[package]]
+name = "pydot"
+version = "1.4.2"
+description = "Python interface to Graphviz's Dot"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+files = [
+    {file = "pydot-1.4.2-py2.py3-none-any.whl", hash = "sha256:66c98190c65b8d2e2382a441b4c0edfdb4f4c025ef9cb9874de478fb0793a451"},
+    {file = "pydot-1.4.2.tar.gz", hash = "sha256:248081a39bcb56784deb018977e428605c1c758f10897a339fce1dd728ff007d"},
+]
+
+[package.dependencies]
+pyparsing = ">=2.1.4"
+
 [[package]]
 name = "pyflakes"
 version = "2.4.0"
@@ -1722,6 +1736,16 @@ files = [
 [package.extras]
 plugins = ["importlib-metadata"]
 
+[[package]]
+name = "pygraphviz"
+version = "1.11"
+description = "Python interface to Graphviz"
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "pygraphviz-1.11.zip", hash = "sha256:a97eb5ced266f45053ebb1f2c6c6d29091690503e3a5c14be7f908b37b06f2d4"},
+]
+
 [[package]]
 name = "pymdown-extensions"
 version = "10.0.1"
@@ -1781,6 +1805,20 @@ cryptography = ">=38.0.0,<40"
 docs = ["sphinx (!=5.2.0,!=5.2.0.post0)", "sphinx-rtd-theme"]
 test = ["flaky", "pretend", "pytest (>=3.0.1)"]
 
+[[package]]
+name = "pyparsing"
+version = "3.1.1"
+description = "pyparsing module - Classes and methods to define and execute parsing grammars"
+optional = false
+python-versions = ">=3.6.8"
+files = [
+    {file = "pyparsing-3.1.1-py3-none-any.whl", hash = "sha256:32c7c0b711493c72ff18a981d24f28aaf9c1fb7ed5e9667c9e84e3db623bdbfb"},
+    {file = "pyparsing-3.1.1.tar.gz", hash = "sha256:ede28a1a32462f5a9705e07aea48001a08f7cf81a021585011deba701581a0db"},
+]
+
+[package.extras]
+diagrams = ["jinja2", "railroad-diagrams"]
+
 [[package]]
 name = "python-dateutil"
 version = "2.8.2"
@@ -2794,4 +2832,4 @@ gunicorn = ["gunicorn"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.11"
-content-hash = "89f7743afdfbdc30b089cfb2155aa08841bbb073ad5b46ed9a70f868e871ad15"
+content-hash = "ccd8883420d4c7c03763fa195b4234b2e2fc1acc24fb9a9445dac0ea9618476f"
diff --git a/pyproject.toml b/pyproject.toml
index 6d3ca9af7..960121451 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ python = "^3.11"
 Django = "~4.2"
 wagtail = "~5.2"
 psycopg2 = "^2.9.3"
-gunicorn = {version = "^20.1.0", optional = true}
+gunicorn = { version = "^20.1.0", optional = true }
 django-pattern-library = "^1.1.0"
 whitenoise = "^6.1.0"
 dj-database-url = "^0.5.0"
@@ -37,11 +37,14 @@ gunicorn = ["gunicorn"]
 [tool.poetry.dev-dependencies]
 Werkzeug = "^2.1.2"
 django-debug-toolbar = "^4.1.0"
-django-extensions = "^3.2.1"
+django-extensions = "^3.2.3"
 fabric = "~2.5"
 stellar = "^0.4.5"
 pudb = "^2020.1"
 honcho = "^1.1.0"
+pygraphviz = "^1.11"
+pyparsing = "^3.1.1"
+pydot = "^1.4.2"
 
 # Linters etc.
 black = "^22.3.0"
diff --git a/tbx/settings/dev.py b/tbx/settings/dev.py
index 47690de84..90f079fb7 100644
--- a/tbx/settings/dev.py
+++ b/tbx/settings/dev.py
@@ -47,6 +47,8 @@
     "SHOW_COLLAPSED": True,
 }
 
+INSTALLED_APPS += ["django_extensions"]  # noqa
+
 try:
     from .local import *  # noqa
 except ImportError: