diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
index 4ad5ad4cc1ce..140cec93b854 100644
--- a/lib/matplotlib/tests/test_axes.py
+++ b/lib/matplotlib/tests/test_axes.py
@@ -4031,7 +4031,7 @@ def test_psd_noise():
 
 
 @image_comparison(baseline_images=['csd_freqs'], remove_text=True,
-                  extensions=['png'])
+                  extensions=['png'], tol=0.002)
 def test_csd_freqs():
     '''test axes.csd with sinusoidal stimuli'''
     n = 10000