diff --git a/end_to_end_tests/metadata_snapshots/pdm.pyproject.toml b/end_to_end_tests/metadata_snapshots/pdm.pyproject.toml
index 4f744fb09..59c922939 100644
--- a/end_to_end_tests/metadata_snapshots/pdm.pyproject.toml
+++ b/end_to_end_tests/metadata_snapshots/pdm.pyproject.toml
@@ -4,7 +4,7 @@ version = "0.1.0"
 description = "A client library for accessing Test 3.1 Features"
 authors = []
 readme = "README.md"
-requires-python = ">=3.9,<4.0"
+requires-python = ">=3.9"
 dependencies = [
     "httpx>=0.23.0,<0.29.0",
     "attrs>=22.2.0",
diff --git a/end_to_end_tests/metadata_snapshots/uv.pyproject.toml b/end_to_end_tests/metadata_snapshots/uv.pyproject.toml
index b1bdad56f..a3fe2754f 100644
--- a/end_to_end_tests/metadata_snapshots/uv.pyproject.toml
+++ b/end_to_end_tests/metadata_snapshots/uv.pyproject.toml
@@ -3,7 +3,7 @@ name = "test-3-1-features-client"
 version = "0.1.0"
 description = "A client library for accessing Test 3.1 Features"
 authors = []
-requires-python = ">=3.9,<4.0"
+requires-python = ">=3.9"
 readme = "README.md"
 dependencies = [
     "httpx>=0.23.0,<0.29.0",
diff --git a/openapi_python_client/templates/pyproject_pdm.toml.jinja b/openapi_python_client/templates/pyproject_pdm.toml.jinja
index 82b50ea52..b87b2711a 100644
--- a/openapi_python_client/templates/pyproject_pdm.toml.jinja
+++ b/openapi_python_client/templates/pyproject_pdm.toml.jinja
@@ -4,7 +4,7 @@ version = "{{ package_version }}"
 description = "{{ package_description }}"
 authors = []
 readme = "README.md"
-requires-python = ">=3.9,<4.0"
+requires-python = ">=3.9"
 dependencies = [
     "httpx>=0.23.0,<0.29.0",
     "attrs>=22.2.0",
diff --git a/openapi_python_client/templates/pyproject_uv.toml.jinja b/openapi_python_client/templates/pyproject_uv.toml.jinja
index 268382db8..7d0f67025 100644
--- a/openapi_python_client/templates/pyproject_uv.toml.jinja
+++ b/openapi_python_client/templates/pyproject_uv.toml.jinja
@@ -3,7 +3,7 @@ name = "{{ project_name }}"
 version = "{{ package_version }}"
 description = "{{ package_description }}"
 authors = []
-requires-python = ">=3.9,<4.0"
+requires-python = ">=3.9"
 readme = "README.md"
 dependencies = [
     "httpx>=0.23.0,<0.29.0",