diff --git a/{{cookiecutter.repo_name}}/runtime.txt b/{{cookiecutter.repo_name}}/runtime.txt
index 18104d92b..8d5e4598d 100644
--- a/{{cookiecutter.repo_name}}/runtime.txt
+++ b/{{cookiecutter.repo_name}}/runtime.txt
@@ -1,3 +1,3 @@
 {% if cookiecutter.use_python2 == 'n' -%}
-python-3.4.3
+python-3.5.0
 {%- endif %}