[requires.io] dependency update

requires · requires · commit 49ce64e28e01 · 2018-09-22T22:33:26.000+02:00
diff --git a/test_requirements.txt b/test_requirements.txt
@@ -1,3 +1,3 @@
-pytest==3.8.0
+pytest==3.8.1
 pytest-cov==2.6.0
 hypothesis
