diff --git a/pyproject.toml b/pyproject.toml
index dce2156e..31cc2dcc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,6 +32,7 @@ dependencies = [
 # On a mac, install optional dependencies with `pip install '.[dev]'` (include the single quotes)
 [project.optional-dependencies]
 dev = [
+    "black",
     "mypy", # Used for static type checking of files
     "pre-commit", # Used to run checks before finalizing a git commit
     "pylint", # Used for static linting of files