diff --git a/.hgtags b/.hgtags
index 0bcf852d36..13e927d09c 100644
--- a/.hgtags
+++ b/.hgtags
@@ -21,3 +21,4 @@ b9814667c187bc4e213eb10c5256437a790e2849 4.8.0
 23a8931116bed13994af40c3bf9d7632e0df28ea 5.0.0
 080812b480cd24b0b22ebdf37ca91a82dbe790d0 5.2.0
 55d7764fe6a712f088e83d3413544aa639cd5e7b 5.4.0
+a64edf89271ae09889a5239b2a6890f80112c8a4 5.6.0