[requires.io] dependency update

requires · requires · commit 447de4d2ac7d · 2017-12-06T03:51:53.000Z
diff --git a/test_requirements.txt b/test_requirements.txt
@@ -1,4 +1,4 @@
-pytest==3.3.0
+pytest==3.3.1
 pytest-cov==2.5.1
 pytest-xdist==1.20.1
 hypothesis
