diff --git a/.hgtags b/.hgtags
index abd564c007..4179bea8f4 100644
--- a/.hgtags
+++ b/.hgtags
@@ -26,3 +26,4 @@ f825a126c157673c9e3ff98ccfa9a84a0035764a 5.8.0
 59c4a6ded81909758f770ecce3e59fd3b37dce30 6.0.0
 6d148309586407b95ed1a55e6be7948d456ad53c 6.2.0
 a96786f70f66eae5fc3558abc784d13d8be5059e 6.4.0
+da96b7b87a5570025202751c292d235dc30067d1 6.6.0