diff --git a/poetry.lock b/poetry.lock
index f505799da..55f4ba85d 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -13,19 +13,20 @@ files = [
 
 [[package]]
 name = "anyio"
-version = "4.1.0"
+version = "4.2.0"
 description = "High level compatibility layer for multiple asynchronous event loop implementations"
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "anyio-4.1.0-py3-none-any.whl", hash = "sha256:56a415fbc462291813a94528a779597226619c8e78af7de0507333f700011e5f"},
-    {file = "anyio-4.1.0.tar.gz", hash = "sha256:5a0bec7085176715be77df87fc66d6c9d70626bd752fcc85f57cdbee5b3760da"},
+    {file = "anyio-4.2.0-py3-none-any.whl", hash = "sha256:745843b39e829e108e518c489b31dc757de7d2131d53fac32bd8df268227bfee"},
+    {file = "anyio-4.2.0.tar.gz", hash = "sha256:e1875bb4b4e2de1669f4bc7869b6d3f54231cdced71605e6e64c9be77e3be50f"},
 ]
 
 [package.dependencies]
 exceptiongroup = {version = ">=1.0.2", markers = "python_version < \"3.11\""}
 idna = ">=2.8"
 sniffio = ">=1.1"
+typing-extensions = {version = ">=4.1", markers = "python_version < \"3.11\""}
 
 [package.extras]
 doc = ["Sphinx (>=7)", "packaging", "sphinx-autodoc-typehints (>=1.2.0)", "sphinx-rtd-theme"]
@@ -2499,4 +2500,4 @@ compatible-mypy = ["mypy"]
 [metadata]
 lock-version = "2.0"
 python-versions = ">= 3.8.1,<4.0"
-content-hash = "3941fc1b4ddae4acd2de68cf0140df2d81d2833c460cebfa26c5f7d6ce8e335a"
+content-hash = "1811e5d08d049c900ded7a7932d4cfbd30891c39f7f9924ab5aedcdc7051aee4"
diff --git a/pyproject.toml b/pyproject.toml
index 8f2a58fda..6363feb6a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ typing-extensions = ">=4.0,<5.0"
 mypy = { version = ">=1.5,<1.6", optional = true }
 
 [tool.poetry.dev-dependencies]
-anyio = "^4.1"
+anyio = "^4.2"
 trio = "^0.23"
 attrs = "^23.1"
 httpx = "^0.25"
diff --git a/returns/primitives/asserts.py b/returns/primitives/asserts.py
index dfc3cd21b..cb06ad8fb 100644
--- a/returns/primitives/asserts.py
+++ b/returns/primitives/asserts.py
@@ -37,7 +37,7 @@ def _convert(container, *, deps, backend: str):
         import anyio
 
         return _convert(
-            anyio.run(container.awaitable, backend=backend),
+            anyio.run(container.awaitable, backend=backend),  # type: ignore
             deps=deps,
             backend=backend,
         )
diff --git a/tests/test_examples/test_context/test_reader_future_result.py b/tests/test_examples/test_context/test_reader_future_result.py
index f1ffdbb07..9d474f73b 100644
--- a/tests/test_examples/test_context/test_reader_future_result.py
+++ b/tests/test_examples/test_context/test_reader_future_result.py
@@ -67,7 +67,7 @@ def factory(post: _Post) -> str:
     future_result = managed_httpx(
         FutureResultE.from_value(httpx.AsyncClient(timeout=5)),
     )
-    print(anyio.run(future_result.awaitable))  # noqa: WPS421
+    print(anyio.run(future_result.awaitable))  # type: ignore # noqa: WPS421
     # <IOResult: <Success: (
     #    'sunt aut facere repellat provident occaecati ...',
     #    'qui est esse',