diff --git a/examples/robust_regression.py b/examples/robust_regression.py
index 16139b6a886f88fb6cd6d86b9b685633c31f6e12..8ba563e4261ba03967407888a2e0b744769b6333 100644
--- a/examples/robust_regression.py
+++ b/examples/robust_regression.py
@@ -9,7 +9,7 @@ import seaborn as sns
 sns.set_style("white")
 
 from pybasicbayes.util.text import progprint_xrange
-from pybasicbayes.distributions.regression import Regression, RobustRegression
+from pybasicbayes.distributions import Regression, RobustRegression
 
 D_out = 1
 D_in = 2
diff --git a/pybasicbayes/distributions/regression.py b/pybasicbayes/distributions/regression.py
index ef2b0f5ae410c08e3a4a62cfcf2ca18b70e09955..2ca302a46518153c30d55710c7a26a886bc055e3 100644
--- a/pybasicbayes/distributions/regression.py
+++ b/pybasicbayes/distributions/regression.py
@@ -2,7 +2,8 @@ from __future__ import division
 from builtins import zip
 from builtins import range
 __all__ = ['Regression', 'RegressionNonconj', 'ARDRegression',
-           'AutoRegression', 'ARDAutoRegression', 'DiagonalRegression']
+           'AutoRegression', 'ARDAutoRegression', 'DiagonalRegression',
+           'RobustRegression', 'RobustAutoRegression']
 
 import numpy as np
 from numpy import newaxis as na