diff --git a/pyproject.toml b/pyproject.toml
index 38bdd39..88d2353 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-dev = ["black==24.4.2", "pylint==3.2.5", "pytest==8.2.2"]
+dev = ["black==24.8.0", "pylint==3.2.5", "pytest==8.2.2"]
 
 [project.urls]
 "Homepage" = "https://github.com/vtuber-plan/olah"