diff --git a/aiidalab_widgets_base/utils/__init__.py b/aiidalab_widgets_base/utils/__init__.py
index f6dd03da6..8a6f53304 100644
--- a/aiidalab_widgets_base/utils/__init__.py
+++ b/aiidalab_widgets_base/utils/__init__.py
@@ -1,16 +1,17 @@
 """Some utility functions used acrross the repository."""
 
+import itertools
+import operator
 import threading
 from enum import Enum
 from typing import Any
 
+import ase
+import ase.io
 import ipywidgets as ipw
-import more_itertools as mit
 import numpy as np
-import traitlets
+import traitlets as tl
 from aiida.plugins import DataFactory
-from ase import Atoms
-from ase.io import read
 
 CifData = DataFactory("core.cif")  # pylint: disable=invalid-name
 StructureData = DataFactory("core.structure")  # pylint: disable=invalid-name
@@ -43,9 +44,9 @@ def get_ase_from_file(fname, file_format=None):  # pylint: disable=redefined-bui
     # store_tags parameter is useful for CIF files
     # https://wiki.fysik.dtu.dk/ase/ase/io/formatoptions.html#cif
     if file_format == "cif":
-        traj = read(fname, format=file_format, index=":", store_tags=True)
+        traj = ase.io.read(fname, format=file_format, index=":", store_tags=True)
     else:
-        traj = read(fname, format=file_format, index=":")
+        traj = ase.io.read(fname, format=file_format, index=":")
     if not traj:
         raise ValueError(f"Could not read any information from the file {fname}")
     return traj
@@ -53,7 +54,7 @@ def get_ase_from_file(fname, file_format=None):  # pylint: disable=redefined-bui
 
 def find_ranges(iterable):
     """Yield range of consecutive numbers."""
-    for grp in mit.consecutive_groups(iterable):
+    for grp in _consecutive_groups(iterable):
         group = list(grp)
         if len(group) == 1:
             yield group[0]
@@ -61,6 +62,22 @@ def find_ranges(iterable):
             yield group[0], group[-1]
 
 
+def _consecutive_groups(iterable, ordering=lambda x: x):
+    """Yield groups of consecutive items using :func:`itertools.groupby`.
+    The *ordering* function determines whether two items are adjacent by
+    returning their position.
+
+    This is a vendored version of more_itertools.consecutive_groups
+    https://more-itertools.readthedocs.io/en/v10.3.0/_modules/more_itertools/more.html#consecutive_groups
+    Distributed under MIT license: https://more-itertools.readthedocs.io/en/v10.3.0/license.html
+    Thank you Bo Bayles for the original implementation. <3
+    """
+    for _, g in itertools.groupby(
+        enumerate(iterable), key=lambda x: x[0] - ordering(x[1])
+    ):
+        yield map(operator.itemgetter(1), g)
+
+
 def list_to_string_range(lst, shift=1):
     """Converts a list like [0, 2, 3, 4] into a string like '1 3..5'.
 
@@ -124,7 +141,7 @@ def inverse_matrix(self):
         return np.linalg.inv(self.matrix)
 
 
-class _StatusWidgetMixin(traitlets.HasTraits):
+class _StatusWidgetMixin(tl.HasTraits):
     """Show temporary messages for example for status updates.
     This is a mixin class that is meant to be part of an inheritance
     tree of an actual widget with a 'value' traitlet that is used
@@ -132,7 +149,7 @@ class _StatusWidgetMixin(traitlets.HasTraits):
     for examples.
     """
 
-    message = traitlets.Unicode(default_value="", allow_none=True)
+    message = tl.Unicode(default_value="", allow_none=True)
     new_line = "\n"
 
     def __init__(self, clear_after=3, *args, **kwargs):
@@ -169,7 +186,7 @@ class StatusHTML(_StatusWidgetMixin, ipw.HTML):
 
     # This method should be part of _StatusWidgetMixin, but that does not work
     # for an unknown reason.
-    @traitlets.observe("message")
+    @tl.observe("message")
     def _observe_message(self, change):
         self.show_temporary_message(change["new"])
 
@@ -201,7 +218,7 @@ def wrap_message(message, level=MessageLevel.INFO):
     """
 
 
-def ase2spglib(ase_structure: Atoms) -> tuple[Any, Any, Any]:
+def ase2spglib(ase_structure: ase.Atoms) -> tuple[Any, Any, Any]:
     """
     Convert ase Atoms instance to spglib cell in the format defined at
     https://spglib.github.io/spglib/python-spglib.html#crystal-structure-cell
diff --git a/setup.cfg b/setup.cfg
index 092ad70df..5d3db08a6 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -30,7 +30,6 @@ install_requires =
     traitlets~=5.9.0
     ipywidgets~=7.7
     widgetsnbextension<3.6.3
-    more-itertools~=8.0
     pymysql~=0.9
     nglview~=3.0
     spglib>=1.14,<3