diff --git a/nireports/tests/test_reportlets.py b/nireports/tests/test_reportlets.py
index d1a32640..8095c612 100644
--- a/nireports/tests/test_reportlets.py
+++ b/nireports/tests/test_reportlets.py
@@ -27,6 +27,7 @@
 from itertools import permutations
 from pathlib import Path
 
+import matplotlib.pyplot as plt
 import nibabel as nb
 import numpy as np
 import pandas as pd
@@ -127,6 +128,8 @@ def test_carpetplot(tr, sorting, outdir):
         sort_rows=sorting,
     )
 
+    plt.close()
+
 
 @pytest.mark.parametrize(
     "input_files",