diff --git a/runtime.txt b/runtime.txt
index 2b55d15ca0c808349643460bb82abb17df496d02..f27f1cc5ca4d2e750411e5ee682f6eb6baa674c2 100644
--- a/runtime.txt
+++ b/runtime.txt
@@ -1 +1 @@
-python-2.7.10
+python-2.7.15