diff --git a/poetry.lock b/poetry.lock
index 95a3876..3eadc00 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -5909,4 +5909,4 @@ testing = ["big-O", "jaraco.functools", "jaraco.itertools", "more-itertools", "p
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.9,<3.12"
-content-hash = "3e65a429861d082d244bcda57b4ba5843b839f516410731531f4b35a819ddf50"
+content-hash = "a9285ac3011a783286597c4d812ec65c26e843850e740176703a3db47960771b"
diff --git a/pyproject.toml b/pyproject.toml
index 9ed41b8..24afadd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -58,6 +58,7 @@ sphinx-rtd-theme = "^1.0.0"
 sphinx-autobuild = "^2021.3.14"
 pre-commit = "^2.20.0"
 sphinx-copybutton = "^0.4.0"
+scipy = "1.10.1"
 black = "^21.10b0"
 sphinx-click = {git = "https://github.com/rbturnbull/sphinx-click.git"}