diff --git a/poetry.lock b/poetry.lock
index f496d4c34..4a66f411d 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -862,7 +862,7 @@ docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
 testing = ["pytest (>=3.5,<3.7.3 || >3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "jaraco.test (>=3.2.0)", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy"]
 
 [metadata]
-content-hash = "699dd2bc4d231d105ea10a71f3a57c5c2d63cd601dab7f710610f938cc863771"
+content-hash = "8d6abadf78b0602616ed0572d947e540b2357fc1741fc4a98e5b81a310d7503c"
 python-versions = ">=3.6,<3.9"
 
 [metadata.files]
diff --git a/pyproject.toml b/pyproject.toml
index 257d31215..4efc30bb9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -85,6 +85,7 @@ semantic_version = "^2.8.5"
 typing-extensions = "^3.7.4"
 mypy = "^0.782"
 
+# uvloop >= 0.15.0 is not compatible with Python 3.6 and not available on Windows
 [tool.poetry.dependencies.uvloop]
 version = "<0.15.0"
 markers = "sys_platform != 'win32'"