diff --git a/pyproject.toml b/pyproject.toml
index d0d17523..54da3509 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,10 +22,7 @@ classifiers = [
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: Software Development :: Libraries :: Python Modules",
 ]
-packages = [
-    { include = "reactivex" },
-    { include = "reactivex/py.typed" }
-]
+packages = [{ include = "reactivex" }, { include = "reactivex/py.typed" }]
 
 [tool.poetry.dependencies]
 python = ">= 3.7, < 4.0"
@@ -37,7 +34,7 @@ pytest = "^7.0.1"
 coverage = "^6.3.2"
 pytest-xdist = "^2.5.0"
 black = "^22.1.0"
-isort = "^5.10.1"
+isort = "5.11.5"
 pyright = "^0.0.13"
 mypy = "^0.931"
 flake8 = "^4.0.1"
@@ -53,17 +50,20 @@ include = '\.py$'
 
 [tool.isort]
 profile = "black"
-line_length=88                 # corresponds to -w  flag
-multi_line_output=3            # corresponds to -m  flag
-include_trailing_comma=true    # corresponds to -tc flag
-skip_glob = '^((?!py$).)*$'    # isort all Python files
-float_to_top=true
+line_length = 88              # corresponds to -w  flag
+multi_line_output = 3         # corresponds to -m  flag
+include_trailing_comma = true # corresponds to -tc flag
+skip_glob = '^((?!py$).)*$'   # isort all Python files
+float_to_top = true
 
 [tool.mypy]
 python_version = "3.9"
 follow_imports = "silent"
 files = ["reactivex"]
-exclude = ["reactivex/operators/_\\w.*\\.py$", "reactivex/curry\\.py$"] # mypy will eventually catch up
+exclude = [
+    "reactivex/operators/_\\w.*\\.py$",
+    "reactivex/curry\\.py$",
+] # mypy will eventually catch up
 disallow_any_generics = true
 disallow_untyped_defs = true
 
@@ -75,4 +75,3 @@ asyncio_mode = "strict"
 [build-system]
 requires = ["poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"
-