diff --git a/tests/test_extrapolation.py b/tests/test_extrapolation.py
index fde327c2cd768581755185373ece8f8090f1f038..3ae4bb071ad307a12764b42325dc712b03d03124 100644
--- a/tests/test_extrapolation.py
+++ b/tests/test_extrapolation.py
@@ -9,7 +9,7 @@ import gext.grassmann
 import utils
 
 SMALL = 1e-10
-THRESHOLD = 2e-2
+THRESHOLD = 5e-2
 
 @pytest.mark.parametrize("datafile", ["urea.json", "glucose.json"])
 @pytest.mark.parametrize("fitting", ["leastsquare", "qtr"])