diff --git a/poetry.lock b/poetry.lock
index fa349167..9c003177 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -561,17 +561,17 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 
 [[package]]
 name = "isort"
-version = "4.3.21"
+version = "5.9.3"
 description = "A Python utility / library to sort Python imports."
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=3.6.1,<4.0"
 
 [package.extras]
-pipfile = ["pipreqs", "requirementslib"]
-pyproject = ["toml"]
-requirements = ["pipreqs", "pip-api"]
-xdg_home = ["appdirs (>=1.4.0)"]
+pipfile_deprecated_finder = ["pipreqs", "requirementslib"]
+requirements_deprecated_finder = ["pipreqs", "pip-api"]
+colors = ["colorama (>=0.4.3,<0.5.0)"]
+plugins = ["setuptools"]
 
 [[package]]
 name = "jinja2"
@@ -1325,7 +1325,7 @@ tests = ["aiofiles", "molten", "python-multipart"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "38e2869421d591fbf885518de07b0f21f865d353756389da69470f3bce478d01"
+content-hash = "2fa4ef23c61f44c5029a0e3a4b7f2ec26e578a5af17ce6fea4ebd703cacc6845"
 
 [metadata.files]
 add-trailing-comma = [
@@ -1565,8 +1565,8 @@ importlib-metadata = [
     {file = "importlib_metadata-4.8.1.tar.gz", hash = "sha256:f284b3e11256ad1e5d03ab86bb2ccd6f5339688ff17a4d797a0fe7df326f23b1"},
 ]
 isort = [
-    {file = "isort-4.3.21-py2.py3-none-any.whl", hash = "sha256:6e811fcb295968434526407adb8796944f1988c5b65e8139058f2014cbe100fd"},
-    {file = "isort-4.3.21.tar.gz", hash = "sha256:54da7e92468955c4fceacd0c86bd0ec997b0e1ee80d97f67c35a78b719dccab1"},
+    {file = "isort-5.9.3-py3-none-any.whl", hash = "sha256:e17d6e2b81095c9db0a03a8025a957f334d6ea30b26f9ec70805411e5c7c81f2"},
+    {file = "isort-5.9.3.tar.gz", hash = "sha256:9c2ea1e62d871267b78307fe511c0838ba0da28698c5732d54e2790bf3ba9899"},
 ]
 jinja2 = [
     {file = "Jinja2-3.0.1-py3-none-any.whl", hash = "sha256:1f06f2da51e7b56b8f238affdd6b4e2c61e39598a378cc49345bc1bd42a978a4"},
diff --git a/pyproject.toml b/pyproject.toml
index f8029e43..0ba95cda 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ python-multipart = { version = "^0.0.5", optional = true }
 nox = "^2020.5.24"
 # formatters
 black = "^20.8b1"
-isort = "^4.3"
+isort = "^5.9"
 autoflake = "^1.4"
 add-trailing-comma = "^2.0.1"
 # linters