diff --git a/pip-requirements.txt b/pip-requirements.txt
index f21e961..f61428f 100644
--- a/pip-requirements.txt
+++ b/pip-requirements.txt
@@ -9,7 +9,7 @@ idna==2.7
 Markdown==3.1
 numpy==1.12.1
 packaging==16.8
-py==1.4.33
+py==1.10.0
 pyparsing==2.2.0
 pySLALIB==1.0.4
 pytest==3.0.7