diff --git a/tests/test_demographics.py b/tests/test_demographics.py
index b49b58b27..7ea0e2167 100644
--- a/tests/test_demographics.py
+++ b/tests/test_demographics.py
@@ -262,7 +262,7 @@ def test_infant_mort():
     mort_rates, infmort_rate = demographics.get_mort(100, 0, 99, graph=False)
     # check that infant mortality equals rate hardcoded into
     # demographics.py
-    assert infmort_rate == 0.00477758
+    assert infmort_rate == 0.00496921
 
 
 def test_pop_rebin():