diff --git a/.hgtags b/.hgtags
index 5110139bb1..bb1bd69740 100644
--- a/.hgtags
+++ b/.hgtags
@@ -26,3 +26,4 @@ c3e8f768f3111818462bb1a6926f35a2ae00302a 5.6.0
 0b9e166bca5d3b9bd5666d2458c1b3d4577a0754 6.0.0
 fa794d85b188442289d06decbc953e7aa0f047c9 6.2.0
 3a7deef23ded57d64616ddd87330b0d2e0dfce82 6.4.0
+68cf89bc3b6c919daee757985744f3ed541e079f 6.6.0