diff --git a/pyproject.toml b/pyproject.toml
index d6b4b10..b27295c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -53,7 +53,7 @@ packages = ["src/promptdrifter"]
 dev = [
     "pytest-cov>=6.1.1",
     "pytest-mock>=3.14.0",
-    "pytest (>=9.0.2,<9.1.0)",
+    "pytest (>=9.1.1,<9.2.0)",
     "pytest-asyncio (>=1.4.0,<1.5.0)",
     "ruff>=0.11.8",
     "respx (>=0.23.1,<0.24.0)",
diff --git a/uv.lock b/uv.lock
index cd70114..9fecdfe 100644
--- a/uv.lock
+++ b/uv.lock
@@ -934,7 +934,7 @@ requires-dist = [
     { name = "jsonschema", specifier = ">=4.23.0,<5.0.0" },
     { name = "openai", specifier = ">=2.41.0,<2.42.0" },
     { name = "packaging", specifier = ">=23.2" },
-    { name = "pytest", marker = "extra == 'dev'", specifier = ">=9.0.2,<9.1.0" },
+    { name = "pytest", marker = "extra == 'dev'", specifier = ">=9.1.1,<9.2.0" },
     { name = "pytest-asyncio", marker = "extra == 'dev'", specifier = ">=1.4.0,<1.5.0" },
     { name = "pytest-cov", marker = "extra == 'dev'", specifier = ">=6.1.1" },
     { name = "pytest-mock", marker = "extra == 'dev'", specifier = ">=3.14.0" },
@@ -1076,7 +1076,7 @@ wheels = [
 
 [[package]]
 name = "pytest"
-version = "9.0.3"
+version = "9.1.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "colorama", marker = "sys_platform == 'win32'" },
@@ -1085,9 +1085,9 @@ dependencies = [
     { name = "pluggy" },
     { name = "pygments" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/7d/0d/549bd94f1a0a402dc8cf64563a117c0f3765662e2e668477624baeec44d5/pytest-9.0.3.tar.gz", hash = "sha256:b86ada508af81d19edeb213c681b1d48246c1a91d304c6c81a427674c17eb91c", size = 1572165, upload-time = "2026-04-07T17:16:18.027Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/e4/47/b9efed96c114afcfa3c9d3fe98a76a1d14c74a9e266d397cf6eb64be5e01/pytest-9.1.1.tar.gz", hash = "sha256:1088fbde8f2b49d95a549a195707afa7a76a3ce9bcadc26b6d71f0ffda5fe313", size = 1636369, upload-time = "2026-06-19T10:58:32.857Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/d4/24/a372aaf5c9b7208e7112038812994107bc65a84cd00e0354a88c2c77a617/pytest-9.0.3-py3-none-any.whl", hash = "sha256:2c5efc453d45394fdd706ade797c0a81091eccd1d6e4bccfcd476e2b8e0ab5d9", size = 375249, upload-time = "2026-04-07T17:16:16.13Z" },
+    { url = "https://files.pythonhosted.org/packages/24/25/1de2678b631f5a49215c6c96fff41ba892b0a34df68d6d80292b1b48aa7f/pytest-9.1.1-py3-none-any.whl", hash = "sha256:37a86b45efb9a47a61a36449063e8e18d0cab3161329fc099eb21783169c4f0c", size = 386536, upload-time = "2026-06-19T10:58:31.347Z" },
 ]
 
 [[package]]