diff --git a/tests/plots/test_declarative.py b/tests/plots/test_declarative.py
index b20fbea1d4f..1c369770af0 100644
--- a/tests/plots/test_declarative.py
+++ b/tests/plots/test_declarative.py
@@ -1180,7 +1180,9 @@ def test_declarative_title_fontsize():
     return pc.figure
 
 
-@pytest.mark.mpl_image_compare(remove_text=False, tolerance=0.607)
+@pytest.mark.mpl_image_compare(remove_text=False,
+                               tolerance={'3.1': 11.49,
+                                          '3.0': 11.49}.get(MPL_VERSION, 0.607))
 @needs_cartopy
 def test_declarative_colorbar_fontsize():
     """Test adjusting the font size of a colorbar."""
@@ -1210,8 +1212,9 @@ def test_declarative_colorbar_fontsize():
     return pc.figure
 
 
-@pytest.mark.mpl_image_compare(remove_text=True, tolerance=0.607)
-@needs_cartopy
+@pytest.mark.mpl_image_compare(remove_text=True,
+                               tolerance={'3.1': 2.12,
+                                          '3.0': 2.12}.get(MPL_VERSION, 0.607))
 def test_declarative_station_plot_fontsize():
     """Test adjusting the font size for station plots in PlotObs."""
     data = parse_metar_file(get_test_data('metar_20190701_1200.txt',
@@ -1245,7 +1248,9 @@ def test_declarative_station_plot_fontsize():
     return pc.figure
 
 
-@pytest.mark.mpl_image_compare(remove_text=True, tolerance=0.607)
+@pytest.mark.mpl_image_compare(remove_text=True,
+                               tolerance={'3.1': 20.3,
+                                          '3.0': 20.3}.get(MPL_VERSION, 0.607))
 @needs_cartopy
 def test_declarative_contour_label_fontsize():
     """Test adjusting the font size of contour labels."""