diff --git a/seaborn/tests/__init__.py b/seaborn/tests/__init__.py
index 80588c6758..0c21ad5dd0 100644
--- a/seaborn/tests/__init__.py
+++ b/seaborn/tests/__init__.py
@@ -1,7 +1,11 @@
+import numpy as np
 from matplotlib.pyplot import close
 
 
 class PlotTestCase(object):
 
+    def setUp(self):
+        np.random.seed(49)
+
     def tearDown(self):
         close('all')