diff --git a/.hgtags b/.hgtags
index da68767642..fbfe86eb3d 100644
--- a/.hgtags
+++ b/.hgtags
@@ -52,3 +52,4 @@ ec8f2e7dea44905eb86bb794516506451e4771cb 4.0.0-rc7
 1f6b423ee0c03cbc81df56804e64374ffe287b31 4.0.1-rc4
 f200573325ba92deb71995bfb30c2512a549989a 4.0.1-rc5
 c467b2e6fabd62c195df2f6742b8caa554ad3616 4.0.1-rc6
+b536ebfba183ab404b1704c4b9f5e616bced0251 RELEASE-4.0.1