diff --git a/requirements.txt b/requirements.txt
index 6e8f2cf..333895a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 billiard==3.5.0.2
 drmaa==0.7.6
 nose==1.3.7
-py==1.4.32
+py==1.10.0
 pytest==3.0.6
 rpy2==2.8.5
 six==1.10.0