diff --git a/pyproject.toml b/pyproject.toml
index ac9452d..198587e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,6 +40,7 @@ dependencies = [
 [dependency-groups]
 dev = [
     "mypy>=1.13.0",
+    "pytest>=9.0.2",
     "ruff>=0.9.1",
 ]
 test = [
diff --git a/uv.lock b/uv.lock
index 91e5521..a749268 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1,5 +1,5 @@
 version = 1
-revision = 2
+revision = 3
 requires-python = "==3.12.*"
 
 [options]
@@ -1875,6 +1875,7 @@ dependencies = [
 [package.dev-dependencies]
 dev = [
     { name = "mypy" },
+    { name = "pytest" },
     { name = "ruff" },
 ]
 test = [
@@ -1922,6 +1923,7 @@ requires-dist = [
 [package.metadata.requires-dev]
 dev = [
     { name = "mypy", specifier = ">=1.13.0" },
+    { name = "pytest", specifier = ">=9.0.2" },
     { name = "ruff", specifier = ">=0.9.1" },
 ]
 test = [