diff --git a/msgpack/_version.py b/msgpack/_version.py
index 5762e8c..56f67e4 100644
--- a/msgpack/_version.py
+++ b/msgpack/_version.py
@@ -1 +1 @@
-version = (1, 0, 0, 'rc1')
+version = (1, 0, 0, "rc1")