diff --git a/poetry.lock b/poetry.lock
index f1ddfc1..6075405 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -16,24 +16,24 @@ typing_extensions = ">=3.7.2"
 
 [[package]]
 name = "anyio"
-version = "3.7.1"
+version = "4.0.0"
 description = "High level compatibility layer for multiple asynchronous event loop implementations"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.8"
 files = [
-    {file = "anyio-3.7.1-py3-none-any.whl", hash = "sha256:91dee416e570e92c64041bd18b900d1d6fa78dff7048769ce5ac5ddad004fbb5"},
-    {file = "anyio-3.7.1.tar.gz", hash = "sha256:44a3c9aba0f5defa43261a8b3efb97891f2bd7d804e0e1f56419befa1adfc780"},
+    {file = "anyio-4.0.0-py3-none-any.whl", hash = "sha256:cfdb2b588b9fc25ede96d8db56ed50848b0b649dca3dd1df0b11f683bb9e0b5f"},
+    {file = "anyio-4.0.0.tar.gz", hash = "sha256:f7ed51751b2c2add651e5747c891b47e26d2a21be5d32d9311dfe9692f3e5d7a"},
 ]
 
 [package.dependencies]
-exceptiongroup = {version = "*", markers = "python_version < \"3.11\""}
+exceptiongroup = {version = ">=1.0.2", markers = "python_version < \"3.11\""}
 idna = ">=2.8"
 sniffio = ">=1.1"
 
 [package.extras]
-doc = ["Sphinx", "packaging", "sphinx-autodoc-typehints (>=1.2.0)", "sphinx-rtd-theme (>=1.2.2)", "sphinxcontrib-jquery"]
-test = ["anyio[trio]", "coverage[toml] (>=4.5)", "hypothesis (>=4.0)", "mock (>=4)", "psutil (>=5.9)", "pytest (>=7.0)", "pytest-mock (>=3.6.1)", "trustme", "uvloop (>=0.17)"]
-trio = ["trio (<0.22)"]
+doc = ["Sphinx (>=7)", "packaging", "sphinx-autodoc-typehints (>=1.2.0)"]
+test = ["anyio[trio]", "coverage[toml] (>=7)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "pytest-mock (>=3.6.1)", "trustme", "uvloop (>=0.17)"]
+trio = ["trio (>=0.22)"]
 
 [[package]]
 name = "asgi-lifespan"
@@ -1257,4 +1257,4 @@ files = [
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "78d8449a50446a48f835fe2c44d5ad9562074829d236d7212817d24f0b4a3d49"
+content-hash = "9434702c63c11215f02135a3ace6acd925d893b2d2eecf6553046b339b1a0813"
diff --git a/pyproject.toml b/pyproject.toml
index 8ba036e..ea7ac7f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,7 @@ colorama = {version = "^0.4.6", markers = "sys.platform == 'win32'"}
 [tool.poetry.group.dev.dependencies]
 pytest = "^7.1.2"
 pre-commit = ">=2.19,<4.0"
-anyio = "^3.6.1"
+anyio = ">=3.6.1,<5.0.0"
 pytest-asyncio = ">=0.18.3,<0.22.0"
 pytest-httpx = "^0.21.0"
 asgi-lifespan = "^2.0.0"