diff --git a/poetry.lock b/poetry.lock
index 6806da6d..e7d6a0e4 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -577,7 +577,7 @@ description = "Python 2 and 3 compatibility utilities"
 name = "six"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
-version = "1.14.0"
+version = "1.15.0"
 
 [[package]]
 category = "dev"
@@ -1027,8 +1027,8 @@ requests = [
     {file = "requests-2.23.0.tar.gz", hash = "sha256:b3f43d496c6daba4493e7c431722aeb7dbc6288f52a6e04e7b6023b0247817e6"},
 ]
 six = [
-    {file = "six-1.14.0-py2.py3-none-any.whl", hash = "sha256:8f3cd2e254d8f793e7f3d6d9df77b92252b52637291d0f0da013c76ea2724b6c"},
-    {file = "six-1.14.0.tar.gz", hash = "sha256:236bdbdce46e6e6a3d61a337c0f8b763ca1e8717c03b369e87a7ec7ce1319c0a"},
+    {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
+    {file = "six-1.15.0.tar.gz", hash = "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259"},
 ]
 snowballstemmer = [
     {file = "snowballstemmer-2.0.0-py2.py3-none-any.whl", hash = "sha256:209f257d7533fdb3cb73bdbd24f436239ca3b2fa67d56f6ff88e86be08cc5ef0"},
diff --git a/pyproject.toml b/pyproject.toml
index fa6b9725..cfa23a99 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -55,9 +55,16 @@ docutils = "*"
 requires = ["poetry>=0.12"]
 build-backend = "poetry.masonry.api"
 
+[tool.black]
+line-length = 120
+
 [tool.isort]
 line_length = 120
 skip="annofabapi/__init__.py"
+# blackの設定に合わせる
+# https://black.readthedocs.io/en/stable/the_black_code_style.html#line-length
+multi_line_output=3
+include_trailing_comma = true
+force_grid_wrap = 0
+use_parentheses = true
 
-[tool.black]
-line-length = 120