diff --git a/pyproject.toml b/pyproject.toml
index 32df9ca1c..a28ae14b4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -84,6 +84,7 @@ dependencies = [
   "xdoctest>=1.1.1",
   "mktestdocs>=0.2.1",
   "isort",
+  "networkx",
 ]
 
 [tool.hatch.envs.dev.scripts]
@@ -93,8 +94,8 @@ format = [
   "ruff format ./gpjax ./tests",
   "ruff check --fix .",
 ]
-test = "pytest -vv -n auto ."
-coverage = "pytest -vv --cov=./gpjax --cov-report=xml:./coverage.xml"
+test = "pytest . -vv -n auto"
+coverage = "pytest . -vv --cov=./gpjax --cov-report=xml:./coverage.xml"
 docstrings = "xdoctest ./gpjax"
 
 [project.urls]