diff --git a/mumot/__init__.py b/mumot/__init__.py
index 7f88b80..f55cbc1 100644
--- a/mumot/__init__.py
+++ b/mumot/__init__.py
@@ -20,8 +20,8 @@
 # (e.g. superfluous figures when sliders are moved).
 # Automated testing using tox could be affected as well
 # if default matplotlib backend is used
-if sys.platform == "darwin":
-    matplotlib.use('TkAgg')
+#if sys.platform == "darwin":
+matplotlib.use('TkAgg')
 from matplotlib import pyplot as plt
 from sympy.parsing.latex import parse_latex
 
diff --git a/mumot/views.py b/mumot/views.py
index 003d21b..e6d76f9 100644
--- a/mumot/views.py
+++ b/mumot/views.py
@@ -1653,7 +1653,6 @@ def _plot_field(self) -> None:
         self._update_params()
         self._show_computation_start()
         if not(self._silent):  # @todo is this necessary?
-            plt.figure(self._figureNum)
             plt.clf()
             self._resetErrorMessage()
         self._showErrorMessage(str(self))
diff --git a/setup.py b/setup.py
index 8347d74..c876415 100644
--- a/setup.py
+++ b/setup.py
@@ -29,17 +29,17 @@
     install_requires=[
         'antlr4-python3-runtime',
         'graphviz',
-        'ipykernel<4.7',  # needed so no duplicate figures when wiggle ipywidgets
+        'ipykernel',
         'ipython',
         'ipywidgets',
         'matplotlib',
         'networkx',
-        'notebook<5.5',  # needed if using pyzmq < 17
+        'notebook',
         'pydstool>=0.90.3',  # min version that allows scipy >= 1.0.0 to be used
-        'pyzmq<17',  # needed if using tornado < 5
+        'pyzmq',
         'scipy',
         'sympy>=1.4',
-        'tornado<5'  # needed to avoid errors with older ipykernel
+        'tornado'
     ],
     extras_require={
         'test': [