[requires.io] dependency update

requires · requires · commit cf690ddd76d3 · 2017-11-05T17:40:16.000Z
diff --git a/test_requirements.txt b/test_requirements.txt
@@ -1,5 +1,5 @@
 pytest==3.2.3
 pytest-cov==2.5.1
-coverage==4.4.1
+coverage==4.4.2
 pytest-xdist==1.20.1
 hypothesis
