diff --git a/tests/random.rs b/tests/random.rs
index 33326d8..daf2b30 100644
--- a/tests/random.rs
+++ b/tests/random.rs
@@ -35,6 +35,6 @@ fn exponential_distribution() {
     assert_almost_eq!(a.sample_variance().sqrt(), 1./lambda, 1e-2);
     assert_almost_eq!(a.population_variance().sqrt(), 1./lambda, 1e-2);
     assert_almost_eq!(a.error_mean(), 0.0, 1e-2);
-    assert_almost_eq!(a.skewness(), 2.0, 1e-2);
+    assert_almost_eq!(a.skewness(), 2.0, 1e-1);
     assert_almost_eq!(a.kurtosis(), 6.0, 1e-1);
 }