diff --git a/pyproject.toml b/pyproject.toml
index 99ba7d9..c0d288d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,8 +13,8 @@ force_grid_wrap = 1
 force_sort_within_sections = true
 force_to_top = "pytest"
 honor_noqa = true
-known_first_party = "hexbytes"
-known_third_party = "hypothesis"
+known_first_party = "faster_hexbytes"
+known_third_party = ["hexbytes", "hypothesis"]
 multi_line_output = 3
 profile = "black"
 use_parentheses = true