diff --git a/nibabel/brikhead.py b/nibabel/brikhead.py
index da8692efd..d187a6b34 100644
--- a/nibabel/brikhead.py
+++ b/nibabel/brikhead.py
@@ -198,7 +198,7 @@ def parse_AFNI_header(fobj):
             return parse_AFNI_header(src)
     # unpack variables in HEAD file
     head = fobj.read().split('\n\n')
-    return {key: value for key, value in map(_unpack_var, head)}
+    return dict(map(_unpack_var, head))
 
 
 class AFNIArrayProxy(ArrayProxy):
diff --git a/nibabel/casting.py b/nibabel/casting.py
index 31e27d0e8..042a2f415 100644
--- a/nibabel/casting.py
+++ b/nibabel/casting.py
@@ -764,7 +764,7 @@ def able_int_type(values):
     >>> able_int_type([-1, 1]) == np.int8
     True
     """
-    if any([v % 1 for v in values]):
+    if any(v % 1 for v in values):
         return None
     mn = min(values)
     mx = max(values)
diff --git a/nibabel/cifti2/tests/test_cifti2.py b/nibabel/cifti2/tests/test_cifti2.py
index 895b8f959..6382dab9d 100644
--- a/nibabel/cifti2/tests/test_cifti2.py
+++ b/nibabel/cifti2/tests/test_cifti2.py
@@ -37,7 +37,7 @@ def test_cifti2_metadata():
     assert len(md) == 1
     assert list(iter(md)) == ['a']
     assert md['a'] == 'aval'
-    assert md.data == dict([('a', 'aval')])
+    assert md.data == {'a': 'aval'}
 
     with pytest.warns(FutureWarning):
         md = ci.Cifti2MetaData(metadata={'a': 'aval'})
@@ -57,7 +57,7 @@ def test_cifti2_metadata():
     md['a'] = 'aval'
     assert md['a'] == 'aval'
     assert len(md) == 1
-    assert md.data == dict([('a', 'aval')])
+    assert md.data == {'a': 'aval'}
 
     del md['a']
     assert len(md) == 0
@@ -392,7 +392,7 @@ def test_matrix():
     m[0] = mim_1
     assert list(m.mapped_indices) == [1]
     m.insert(0, mim_0)
-    assert list(sorted(m.mapped_indices)) == [0, 1]
+    assert sorted(m.mapped_indices) == [0, 1]
     assert h.number_of_mapped_indices == 2
     assert h.get_index_map(0) == mim_0
     assert h.get_index_map(1) == mim_1
diff --git a/nibabel/nicom/dicomwrappers.py b/nibabel/nicom/dicomwrappers.py
index 3842248fd..009880e49 100755
--- a/nibabel/nicom/dicomwrappers.py
+++ b/nibabel/nicom/dicomwrappers.py
@@ -685,9 +685,7 @@ def __init__(self, dcm_data, frame_filters=None):
             frame_slc_pos = [np.inner(ipp, self.slice_normal) for ipp in frame_ipps]
             rnd_slc_pos = np.round(frame_slc_pos, 4)
             uniq_slc_pos = np.unique(rnd_slc_pos)
-            pos_ord_map = {
-                val: order for val, order in zip(uniq_slc_pos, np.argsort(uniq_slc_pos))
-            }
+            pos_ord_map = dict(zip(uniq_slc_pos, np.argsort(uniq_slc_pos)))
             self._frame_slc_ord = [pos_ord_map[pos] for pos in rnd_slc_pos]
             if len(self._frame_slc_ord) > 1:
                 self._slice_spacing = (
diff --git a/pyproject.toml b/pyproject.toml
index f7d116ea9..becc93366 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -117,6 +117,7 @@ exclude = ["doc", "nibabel/externals", "tools", "version.py", "versioneer.py"]
 [tool.ruff.lint]
 select = [
     "B",
+    "C4",
     "F",
     "I",
     "PLE",
@@ -135,6 +136,9 @@ ignore = [
     "B023",  # TODO: enable
     "B028",
     "B904",
+    "C401",
+    "C408",
+    "C416",
     # https://docs.astral.sh/ruff/formatter/#conflicting-lint-rules
     "W191",
     "E111",