[requires.io] dependency update

requires · requires · commit 0259fa6bd54a · 2017-09-01T09:16:38.000-05:00
diff --git a/test_requirements.txt b/test_requirements.txt
@@ -1,4 +1,4 @@
 pytest==3.2.1
 pytest-cov==2.5.1
 pytest-xdist==1.20.0
-hypothesis==3.23.0
+hypothesis==3.23.1
