diff --git a/poetry.lock b/poetry.lock
index d3326d4cc..9c1c16a46 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -8,7 +8,7 @@ python-versions = "*"
 
 [[package]]
 name = "anyio"
-version = "3.4.0"
+version = "3.5.0"
 description = "High level compatibility layer for multiple asynchronous event loop implementations"
 category = "dev"
 optional = false
@@ -20,7 +20,7 @@ sniffio = ">=1.1"
 typing-extensions = {version = "*", markers = "python_version < \"3.8\""}
 
 [package.extras]
-doc = ["sphinx-rtd-theme", "sphinx-autodoc-typehints (>=1.2.0)"]
+doc = ["packaging", "sphinx-rtd-theme", "sphinx-autodoc-typehints (>=1.2.0)"]
 test = ["coverage[toml] (>=4.5)", "hypothesis (>=4.0)", "pytest (>=6.0)", "pytest-mock (>=3.6.1)", "trustme", "contextlib2", "uvloop (<0.15)", "mock (>=4)", "uvloop (>=0.15)"]
 trio = ["trio (>=0.16)"]
 
@@ -1562,7 +1562,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "d1dc02831e375bc48f8045ac8020b0194bcde01189ccc1cc5343afcc10afa258"
+content-hash = "b479835583f7cfaf167798ef6db08d8562b9e58b4d74eaabaac94510e09add2d"
 
 [metadata.files]
 alabaster = [
@@ -1570,8 +1570,8 @@ alabaster = [
     {file = "alabaster-0.7.12.tar.gz", hash = "sha256:a661d72d58e6ea8a57f7a86e37d86716863ee5e92788398526d58b26a4e4dc02"},
 ]
 anyio = [
-    {file = "anyio-3.4.0-py3-none-any.whl", hash = "sha256:2855a9423524abcdd652d942f8932fda1735210f77a6b392eafd9ff34d3fe020"},
-    {file = "anyio-3.4.0.tar.gz", hash = "sha256:24adc69309fb5779bc1e06158e143e0b6d2c56b302a3ac3de3083c705a6ed39d"},
+    {file = "anyio-3.5.0-py3-none-any.whl", hash = "sha256:b5fa16c5ff93fa1046f2eeb5bbff2dad4d3514d6cda61d02816dba34fa8c3c2e"},
+    {file = "anyio-3.5.0.tar.gz", hash = "sha256:a0aeffe2fb1fdf374a8e4b471444f0f3ac4fb9f5a5b542b48824475e0042a5a6"},
 ]
 astor = [
     {file = "astor-0.8.1-py2.py3-none-any.whl", hash = "sha256:070a54e890cefb5b3739d19f30f5a5ec840ffc9c50ffa7d23cc9fc1a38ebbfc5"},
diff --git a/pyproject.toml b/pyproject.toml
index 883791de7..bed67e8e9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,7 +59,7 @@ python = "^3.7"
 typing-extensions = ">=4.0,<5.0"
 
 [tool.poetry.dev-dependencies]
-anyio = "^3.4"
+anyio = "^3.5"
 curio = "^1.5"
 trio = "^0.19"
 attrs = "^21.4"