diff --git a/tox.ini b/tox.ini
index 2e8e2876c..e0b071736 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,7 +20,7 @@ deps =
     Flask==0.10.1
     glob2==0.4.1
     httpbin==0.4.1
-    hypothesis==3.1.2
+    hypothesis==3.1.3
     itsdangerous==0.24
     Mako==1.0.4
     parse==1.6.6