diff --git a/requirements.txt b/requirements.txt
index cf8da2d..1ec7bc1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -82,7 +82,7 @@ Mako==1.0.7
 MarkupSafe==1.0
 more-itertools==4.1.0
 pluggy==0.6.0
-py==1.5.3
+py==1.10.0
 pytest==3.5.1
 python-dateutil==2.7.2
 python-editor==1.0.3
@@ -114,7 +114,7 @@ Mako==1.0.7
 MarkupSafe==1.0
 more-itertools==4.1.0
 pluggy==0.6.0
-py==1.5.3
+py==1.10.0
 pytest==3.5.1
 python-dateutil==2.7.2
 python-editor==1.0.3
@@ -148,7 +148,7 @@ Mako==1.0.7
 MarkupSafe==1.0
 more-itertools==4.1.0
 pluggy==0.6.0
-py==1.5.3
+py==1.10.0
 pytest==3.5.1
 python-dateutil==2.7.2
 python-editor==1.0.3
@@ -182,7 +182,7 @@ Mako==1.0.7
 MarkupSafe==1.0
 more-itertools==4.1.0
 pluggy==0.6.0
-py==1.5.3
+py==1.10.0
 pytest==3.5.1
 python-dateutil==2.7.2
 python-editor==1.0.3