diff --git a/configure.ac b/configure.ac
index 58a553c5..44fa6aaa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 AC_INIT(
     [vertex-theme],
-    [20160930],
+    [20170128],
     [https://github.com/horst3180/Vertex-theme/issues],
     [vertex-theme],
     [https://github.com/horst3180/Vertex-theme],