[requires.io] dependency update

requires · requires · commit dce10948d0d1 · 2018-02-20T07:00:10.000Z
diff --git a/test_requirements.txt b/test_requirements.txt
@@ -1,5 +1,5 @@
 pytest==3.4.0
 pytest-cov==2.5.1
 coverage==4.5.1
-pytest-xdist==1.22.0
+pytest-xdist==1.22.1
 hypothesis
