diff --git a/src/asf_tools/vector.py b/src/asf_tools/vector.py
index 831170c..409fb92 100644
--- a/src/asf_tools/vector.py
+++ b/src/asf_tools/vector.py
@@ -13,14 +13,14 @@ def get_features(vector_path: str | Path) -> list[ogr.Feature]:
     return [feature for feature in layer]
 
 
-def get_property_values_for_intersecting_features(geometry: ogr.Geometry, features: Iterator) -> bool:
+def get_property_values_for_intersecting_features(geometry: ogr.Geometry, features: list[ogr.Feature]) -> bool:
     for feature in features:
         if feature.GetGeometryRef().Intersects(geometry):
             return True
     return False
 
 
-def intersecting_feature_properties(geometry: ogr.Geometry, features: Iterator, feature_property: str) -> list[str]:
+def intersecting_feature_properties(geometry: ogr.Geometry, features: list[ogr.Feature], feature_property: str) -> list[str]:
     property_values = []
     for feature in features:
         if feature.GetGeometryRef().Intersects(geometry):
diff --git a/tests/hydrosar/test_flood_map.py b/tests/hydrosar/test_flood_map.py
index 72b0198..813ee8c 100644
--- a/tests/hydrosar/test_flood_map.py
+++ b/tests/hydrosar/test_flood_map.py
@@ -27,7 +27,7 @@ def test_get_waterbody():
 
 def test_logstat():
     arr = [10, 100, 1000, 10000, 100000]
-    logstd = flood_map.logstat(arr)
+    logstd = flood_map.logstat(arr)  # type: ignore[arg-type]
 
     assert np.isclose(logstd, 25.95455351947008)
 
diff --git a/tests/test_raster.py b/tests/test_raster.py
index 6cdef25..27ece39 100644
--- a/tests/test_raster.py
+++ b/tests/test_raster.py
@@ -32,9 +32,9 @@ def test_convert_scale():
 
     a = np.array([-10, -5, 0, 5, 10])
     with pytest.raises(ValueError):
-        _ = raster.convert_scale(a, 'power', 'foo')
+        _ = raster.convert_scale(a, 'power', 'foo')  # type: ignore[arg-type]
     with pytest.raises(ValueError):
-        _ = raster.convert_scale(a, 'bar', 'amplitude')
+        _ = raster.convert_scale(a, 'bar', 'amplitude')  # type: ignore[arg-type]
 
     with pytest.warns(UserWarning):
         assert np.allclose(
@@ -50,6 +50,8 @@ def test_convert_scale():
 def test_convert_scale_masked_arrays():
     masked_array: np.ma.MaskedArray = np.ma.MaskedArray([-1, 0, 1, 4, 9], mask=[False, False, False, False, False])
     c = raster.convert_scale(masked_array, 'power', 'db')
+
+    assert isinstance(c, np.ma.MaskedArray)
     assert np.allclose(c.mask, [True, True, False, False, False])
     assert np.allclose(
         c,
@@ -60,6 +62,8 @@ def test_convert_scale_masked_arrays():
     )
 
     a = raster.convert_scale(c, 'db', 'power')
+
+    assert isinstance(a, np.ma.MaskedArray)
     assert np.allclose(a.mask, [True, True, False, False, False])
     assert np.allclose(a, np.ma.MaskedArray([-1, 0, 1, 4, 9], mask=[True, True, False, False, False]))
 
diff --git a/tests/test_tile.py b/tests/test_tile.py
index 9a8b80a..1cbf02c 100644
--- a/tests/test_tile.py
+++ b/tests/test_tile.py
@@ -35,7 +35,7 @@ def test_tile_masked_array():
     a = np.array([[0, 0, 1, 1], [0, 0, 1, 1], [2, 2, 3, 3], [2, 2, 3, 3]])
 
     with pytest.raises(AttributeError):
-        _ = tile.tile_array(a, tile_shape=(2, 2)).mask
+        _ = tile.tile_array(a, tile_shape=(2, 2)).mask  # type: ignore[attr-defined]
 
     m = np.array(
         [
@@ -86,6 +86,7 @@ def test_untile_array():
         ]
     )
 
+    assert len(a.shape) == 2
     assert np.all(a == tile.untile_array(tile.tile_array(a, tile_shape=(2, 2)), array_shape=a.shape))
     assert np.all(a == tile.untile_array(tile.tile_array(a, tile_shape=(4, 4), pad_value=9), array_shape=a.shape))
     assert np.all(a == tile.untile_array(tile.tile_array(a, tile_shape=(2, 4), pad_value=9), array_shape=a.shape))
@@ -107,8 +108,9 @@ def test_untile_array():
 def test_untile_masked_array():
     a = np.array([[0, 0, 1, 1], [0, 0, 1, 1], [2, 2, 3, 3], [2, 2, 3, 3]])
 
+    assert len(a.shape) == 2
     with pytest.raises(AttributeError):
-        _ = tile.untile_array(tile.tile_array(a, tile_shape=(2, 2)), array_shape=a.shape).mask
+        _ = tile.untile_array(tile.tile_array(a, tile_shape=(2, 2)), array_shape=a.shape).mask  # type: ignore[attr-defined]
 
     m = np.array(
         [
@@ -122,9 +124,12 @@ def test_untile_masked_array():
     ma: np.ma.MaskedArray = np.ma.MaskedArray(a, mask=m)
     untiled = tile.untile_array(tile.tile_array(ma.copy(), tile_shape=(2, 2)), array_shape=a.shape)
 
+    assert isinstance(untiled, np.ma.MaskedArray)
     assert np.all(ma == untiled)
     assert np.all(ma.mask == untiled.mask)
 
     untiled = tile.untile_array(tile.tile_array(ma.copy(), tile_shape=(3, 3), pad_value=4), array_shape=a.shape)
+
+    assert isinstance(untiled, np.ma.MaskedArray)
     assert np.all(ma == untiled)
     assert np.all(ma.mask == untiled.mask)