diff --git a/src/nextline_test_utils/strategies/misc.py b/src/nextline_test_utils/strategies/misc.py
index c9684dd..84c6f1d 100644
--- a/src/nextline_test_utils/strategies/misc.py
+++ b/src/nextline_test_utils/strategies/misc.py
@@ -13,7 +13,7 @@
 
 class StMinMaxValuesFactory(Protocol[T]):  # pragma: no cover
     def __call__(
-        self, *, min_value: Optional[T] = None, max_value: Optional[T] = None
+        self, min_value: Optional[T] = None, max_value: Optional[T] = None
     ) -> st.SearchStrategy[T]: ...
 
 
@@ -68,7 +68,9 @@ def st_graphql_ints(
 
 
 def st_ranges(
-    st_: StMinMaxValuesFactory[T],
+    st_: StMinMaxValuesFactory[T] = st.integers,  # type: ignore
+    /,
+    *,
     min_start: Optional[T] = None,
     max_start: Optional[T] = None,
     min_end: Optional[T] = None,
diff --git a/tests/strategies/test_st_datetimes.py b/tests/strategies/test_st_datetimes.py
index 0d8e3de..344f0ee 100644
--- a/tests/strategies/test_st_datetimes.py
+++ b/tests/strategies/test_st_datetimes.py
@@ -7,7 +7,7 @@
 
 @given(st.data())
 def test_st_datetimes(data: st.DataObject) -> None:
-    min_, max_ = data.draw(st_ranges(st_=st_datetimes))
+    min_, max_ = data.draw(st_ranges(st_datetimes))
     dt_ = data.draw(st_datetimes(min_value=min_, max_value=max_))
     assert dt_.tzinfo is None
     assert dt_.fold == 0
diff --git a/tests/strategies/test_st_ints.py b/tests/strategies/test_st_ints.py
index 14cca35..23d9591 100644
--- a/tests/strategies/test_st_ints.py
+++ b/tests/strategies/test_st_ints.py
@@ -19,7 +19,7 @@
 @given(st.data())
 def test_st_sqlite_ints(data: st.DataObject) -> None:
     min_, max_ = data.draw(
-        st_ranges(st_=st.integers, max_start=SQLITE_INT_MAX, min_end=SQLITE_INT_MIN)
+        st_ranges(st.integers, max_start=SQLITE_INT_MAX, min_end=SQLITE_INT_MIN)
     )
 
     i = data.draw(st_sqlite_ints(min_value=min_, max_value=max_))
@@ -31,7 +31,7 @@ def test_st_sqlite_ints(data: st.DataObject) -> None:
 @given(st.data())
 def test_st_graphql_ints(data: st.DataObject) -> None:
     min_, max_ = data.draw(
-        st_ranges(st_=st.integers, max_start=GRAPHQL_MAX_INT, min_end=GRAPHQL_MIN_INT)
+        st_ranges(st.integers, max_start=GRAPHQL_MAX_INT, min_end=GRAPHQL_MIN_INT)
     )
 
     i = data.draw(st_graphql_ints(min_value=min_, max_value=max_))
diff --git a/tests/strategies/test_st_ranges.py b/tests/strategies/test_st_ranges.py
index 25a4e47..a7fa9d1 100644
--- a/tests/strategies/test_st_ranges.py
+++ b/tests/strategies/test_st_ranges.py
@@ -1,5 +1,5 @@
 import sys
-from typing import Optional, TypeVar
+from typing import Any, Optional, TypeVar, overload
 
 from hypothesis import given, settings
 from hypothesis import strategies as st
@@ -50,7 +50,7 @@ def st_max(min_value: Optional[T]) -> st.SearchStrategy[Optional[T]]:
 
 
 class StRangesKwargs(TypedDict, Generic[T], total=False):
-    st_: StMinMaxValuesFactory[T]
+    # st_: StMinMaxValuesFactory[T]
     min_start: Optional[T]
     max_start: Optional[T]
     min_end: Optional[T]
@@ -63,9 +63,10 @@ class StRangesKwargs(TypedDict, Generic[T], total=False):
 
 @st.composite
 def st_st_ranges_kwargs(
-    draw: st.DrawFn, st_: StMinMaxValuesFactory[T]
+    draw: st.DrawFn, st_: StMinMaxValuesFactory[T] | None = None
 ) -> StRangesKwargs[T]:
-    kwargs = StRangesKwargs(st_=st_)
+    st_ = st_ or st.integers  # type: ignore
+    kwargs = StRangesKwargs[T]()
 
     min_start, max_start = draw(st_min_max_start(st_=st_))  # type: ignore
     if min_start is not None:
@@ -93,7 +94,7 @@ def st_st_ranges_kwargs(
 
 @given(st.data())
 def test_st_st_ranges_kwargs(data: st.DataObject) -> None:
-    st_ = data.draw(st.sampled_from([st_graphql_ints, st_datetimes]))
+    st_ = data.draw(st.sampled_from([None, st_graphql_ints, st_datetimes]))
     kwargs = data.draw(st_st_ranges_kwargs(st_=st_))  # type: ignore
 
     min_start = kwargs.get('min_start')
@@ -108,10 +109,12 @@ def test_st_st_ranges_kwargs(data: st.DataObject) -> None:
 @given(st.data())
 @settings(max_examples=1000)
 def test_st_ranges(data: st.DataObject) -> None:
-    st_ = data.draw(st.sampled_from([st_graphql_ints, st_datetimes]))
+    st_ = data.draw(st.sampled_from([None, st_graphql_ints, st_datetimes]))
     kwargs = data.draw(st_st_ranges_kwargs(st_=st_))  # type: ignore
+    
+    args = (st_,) if st_ is not None else ()
 
-    start, end = data.draw(st_ranges(**kwargs))
+    start, end = data.draw(st_ranges(*args, **kwargs))  # type: ignore
 
     allow_start_none = kwargs.get('allow_start_none', True)
     if not allow_start_none:
diff --git a/tests/test_safe_compare.py b/tests/test_safe_compare.py
index c963d5f..c104c57 100644
--- a/tests/test_safe_compare.py
+++ b/tests/test_safe_compare.py
@@ -14,7 +14,7 @@ def test_repr() -> None:
 def test_safe_compare(data: st.DataObject) -> None:
     allow_equal = data.draw(st.booleans())
     none_or_small, none_or_large = data.draw(
-        st_ranges(st_=st.integers, allow_equal=allow_equal)
+        st_ranges(st.integers, allow_equal=allow_equal)
     )
     if allow_equal:
         assert safe_compare(none_or_small) <= safe_compare(none_or_large)