diff --git a/dev-requirements.txt b/dev-requirements.txt
index 67200009..c6d332ac 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,6 +1,6 @@
 -rrequirements.txt
 
 sphinx==1.7.1
-pytest==3.8.1
+pytest==4.0.0
 pep8==1.7.1
 pytest-timeout==1.2.1