diff --git a/requirements.txt b/requirements.txt
index 21b3192..79fbd60 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ funcy==1.11
 lenses==0.5.0
 hypothesis==4.5.8
 parsimonious==0.8.1
-pytest==4.2.0
+pytest==4.3.1
 pytest-cov==2.6.1
 pytest-flake8==1.0.4
 pytest-xdist==1.22.5