diff --git a/CHANGES b/CHANGES
index 0b098ae09..a9ae114e7 100644
--- a/CHANGES
+++ b/CHANGES
@@ -14,6 +14,10 @@ $ pip install --user --upgrade --pre libtmux
 
 <!-- Maintainers and contributors: Insert change notes for the next release above -->
 
+### Packaging
+
+- Move pytest configuration to `pyproject.toml` (#499)
+
 ### Breaking changes
 
 - Python 3.7 Dropped (#497)
diff --git a/pyproject.toml b/pyproject.toml
index 4e6b2a02b..675b2e1af 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -153,6 +153,19 @@ combine-as-imports = true
 [tool.ruff.per-file-ignores]
 "*/__init__.py" = ["F401"]
 
+[tool.pytest.ini_options]
+addopts = "--tb=short --no-header --showlocals --doctest-docutils-modules --reruns 2 -p no:doctest"
+doctest_optionflags = "ELLIPSIS NORMALIZE_WHITESPACE"
+testpaths = [
+  "src/libtmux",
+  "tests",
+  "docs",
+  "README.md",
+]
+filterwarnings = [
+  "ignore:The frontend.Option(Parser)? class.*:DeprecationWarning::",
+]
+
 [build-system]
 requires = ["poetry_core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 9dfb6f4ed..000000000
--- a/setup.cfg
+++ /dev/null
@@ -1,10 +0,0 @@
-[tool:pytest]
-filterwarnings =
-    ignore:The frontend.Option(Parser)? class.*:DeprecationWarning::
-addopts = --tb=short --no-header --showlocals --doctest-docutils-modules --reruns 2 -p no:doctest
-doctest_optionflags = ELLIPSIS NORMALIZE_WHITESPACE
-testpaths =
-	src/libtmux
-	tests
-	docs
-	README.md