diff --git a/pyproject.toml b/pyproject.toml
index d92754846..d62d390de 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,12 +3,12 @@ requires = [
     "wheel",
     # pin setuptools:
     # https://github.com/airspeed-velocity/asv/pull/1426#issuecomment-2290658198
-	# Most likely cause:
-	# https://github.com/pypa/distutils/issues/283
-	# Workaround based on this commit:
-	# https://github.com/harfbuzz/uharfbuzz/commit/9b607bd06fb17fcb4abe3eab5c4f342ad08309d7
+    # Most likely cause:
+    # https://github.com/pypa/distutils/issues/283
+    # Workaround based on this commit:
+    # https://github.com/harfbuzz/uharfbuzz/commit/9b607bd06fb17fcb4abe3eab5c4f342ad08309d7
     "setuptools>=64,<72.2.0; platform_python_implementation == 'PyPy'",
-	"setuptools>=64; platform_python_implementation != 'PyPy'"
+    "setuptools>=64; platform_python_implementation != 'PyPy'"
 ]
 build-backend = "setuptools.build_meta"