diff --git a/requirements_dev.txt b/requirements_dev.txt
index 23f65b9..78427dc 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -15,7 +15,7 @@ markovify==0.4.0
 MarkupSafe==0.23
 mccabe==0.5.0
 pathtools==0.1.2
-pluggy==0.3.1
+pluggy==0.5.2
 py==1.4.31
 pyasn1==0.1.9
 pycodestyle==2.0.0