diff --git a/src/plopp/backends/matplotlib/canvas.py b/src/plopp/backends/matplotlib/canvas.py
index 4413f10f..db62c494 100644
--- a/src/plopp/backends/matplotlib/canvas.py
+++ b/src/plopp/backends/matplotlib/canvas.py
@@ -533,7 +533,7 @@ def logx(self):
         """
         self.xscale = 'log' if self.xscale == 'linear' else 'linear'
         self._bbox.xmin = np.inf
-        self._bbox.xmax = np.NINF
+        self._bbox.xmax = -np.inf
         self.autoscale()
 
     def logy(self):
@@ -542,7 +542,7 @@ def logy(self):
         """
         self.yscale = 'log' if self.yscale == 'linear' else 'linear'
         self._bbox.ymin = np.inf
-        self._bbox.ymax = np.NINF
+        self._bbox.ymax = -np.inf
         self.autoscale()
 
     def finalize(self):
diff --git a/src/plopp/core/limits.py b/src/plopp/core/limits.py
index 0919d45b..f6d50cee 100644
--- a/src/plopp/core/limits.py
+++ b/src/plopp/core/limits.py
@@ -29,7 +29,7 @@ def find_limits(
     if x.masks:
         x = sc.where(
             merge_masks(x.masks),
-            sc.scalar(np.NaN, unit=x.unit),
+            sc.scalar(np.nan, unit=x.unit),
             x.data.to(dtype='float64'),
         )
     v = x.values
diff --git a/src/plopp/graphics/colormapper.py b/src/plopp/graphics/colormapper.py
index 96294427..85f83565 100644
--- a/src/plopp/graphics/colormapper.py
+++ b/src/plopp/graphics/colormapper.py
@@ -110,7 +110,7 @@ def __init__(
         self.user_vmin = vmin
         self.user_vmax = vmax
         self.vmin = np.inf
-        self.vmax = np.NINF
+        self.vmax = -np.inf
         self.norm = norm
         self._autoscale = autoscale
 
@@ -271,7 +271,7 @@ def toggle_norm(self):
         self.norm = "log" if self.norm == 'linear' else 'linear'
         self.normalizer = _get_normalizer(self.norm)
         self.vmin = np.inf
-        self.vmax = np.NINF
+        self.vmax = -np.inf
         self.autoscale()
         self._set_normalizer_limits()
         self._set_artists_colors(self.artists.keys())
diff --git a/tests/core/limits_test.py b/tests/core/limits_test.py
index 0d9519ea..c864d456 100644
--- a/tests/core/limits_test.py
+++ b/tests/core/limits_test.py
@@ -47,7 +47,7 @@ def test_find_limits_with_inf():
 
 def test_find_limits_with_ninf():
     da = sc.DataArray(data=sc.arange('x', 11.0, unit='m'))
-    da.values[5] = np.NINF
+    da.values[5] = -np.inf
     lims = find_limits(da)
     assert sc.identical(lims[0], sc.scalar(0.0, unit='m'))
     assert sc.identical(lims[1], sc.scalar(10.0, unit='m'))
@@ -55,7 +55,7 @@ def test_find_limits_with_ninf():
 
 def test_find_limits_no_finite_values_raises():
     da = sc.DataArray(
-        data=sc.array(dims=['x'], values=[np.nan, np.inf, np.NINF, np.nan], unit='m')
+        data=sc.array(dims=['x'], values=[np.nan, np.inf, -np.inf, np.nan], unit='m')
     )
     with pytest.raises(ValueError, match="No finite values were found in array"):
         _ = find_limits(da)