diff --git a/mypy/defaults.py b/mypy/defaults.py
index d9b67417d880..b5398f990d11 100644
--- a/mypy/defaults.py
+++ b/mypy/defaults.py
@@ -1,4 +1,4 @@
 PYTHON2_VERSION = (2, 7)
-PYTHON3_VERSION = (3, 5)
+PYTHON3_VERSION = (3, 6)
 CACHE_DIR = '.mypy_cache'
 CONFIG_FILE = 'mypy.ini'