diff --git a/poetry.lock b/poetry.lock
index c11bd4c..45cb2b2 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -954,22 +954,22 @@ testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.
 
 [[package]]
 name = "pytest-asyncio"
-version = "0.18.3"
+version = "0.21.0"
 description = "Pytest support for asyncio"
 category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "pytest-asyncio-0.18.3.tar.gz", hash = "sha256:7659bdb0a9eb9c6e3ef992eef11a2b3e69697800ad02fb06374a210d85b29f91"},
-    {file = "pytest_asyncio-0.18.3-1-py3-none-any.whl", hash = "sha256:16cf40bdf2b4fb7fc8e4b82bd05ce3fbcd454cbf7b92afc445fe299dabb88213"},
-    {file = "pytest_asyncio-0.18.3-py3-none-any.whl", hash = "sha256:8fafa6c52161addfd41ee7ab35f11836c5a16ec208f93ee388f752bea3493a84"},
+    {file = "pytest-asyncio-0.21.0.tar.gz", hash = "sha256:2b38a496aef56f56b0e87557ec313e11e1ab9276fc3863f6a7be0f1d0e415e1b"},
+    {file = "pytest_asyncio-0.21.0-py3-none-any.whl", hash = "sha256:f2b3366b7cd501a4056858bd39349d5af19742aed2d81660b7998b6341c7eb9c"},
 ]
 
 [package.dependencies]
-pytest = ">=6.1.0"
+pytest = ">=7.0.0"
 
 [package.extras]
-testing = ["coverage (==6.2)", "flaky (>=3.5.0)", "hypothesis (>=5.7.1)", "mypy (==0.931)", "pytest-trio (>=0.7.0)"]
+docs = ["sphinx (>=5.3)", "sphinx-rtd-theme (>=1.0)"]
+testing = ["coverage (>=6.2)", "flaky (>=3.5.0)", "hypothesis (>=5.7.1)", "mypy (>=0.931)", "pytest-trio (>=0.7.0)"]
 
 [[package]]
 name = "pytest-cov"
@@ -1642,4 +1642,4 @@ injector = ["injector"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.10"
-content-hash = "e62d7cc5600b5c3f56eb954a0172816ccd4c3f5d8e36ce49e0bf7e1f12d0475a"
+content-hash = "8ddef9d2d1b7f5a32ced6733eb0805d1209c1378a6a704f2a32228d794720c84"
diff --git a/pyproject.toml b/pyproject.toml
index 2622b38..03ba8fe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ shed = ">=0.9.5,<2023.4.0"
 pylint = "^2.13.7"
 mypy = "^0.942"
 pytest = "^7.1.1"
-pytest-asyncio = "^0.18.3"
+pytest-asyncio = ">=0.18.3,<0.22.0"
 pytest-cov = ">=3,<5"
 typeguard = "^2.13.3"
 docformatter = "^1.4"