diff --git a/requirements/tests.txt b/requirements/tests.txt
index 62891aa..daafc3c 100644
--- a/requirements/tests.txt
+++ b/requirements/tests.txt
@@ -1,5 +1,5 @@
 # latest version to validate behavior on pure python env
 pytest==3.5.0
 pytest-xdist==1.22.2  # for --boxed
-hypothesis==3.56.3
+hypothesis==3.56.5
 numpy==1.14.2