diff --git a/tox.ini b/tox.ini
index a04410975..dd2444e1f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,7 +20,7 @@ deps =
     Flask==0.10.1
     glob2==0.4.1
     httpbin==0.4.0
-    hypothesis==1.17.1
+    hypothesis==1.18.0
     itsdangerous==0.24
     Mako==1.0.3
     parse==1.6.6