diff --git a/.hgtags b/.hgtags
index e0a12718ee..bd4894e688 100644
--- a/.hgtags
+++ b/.hgtags
@@ -13,3 +13,4 @@ e26c09669b57ecbf8e2404ba6eadcdc158cc86f9 5.8.0
 ddaffd32884073417d2d108b2a13cf010a5d1ef5 6.0.0
 2e41371a09aaa5b5cb5a65b07cc3c3e127552dcf 6.2.0
 5ff83a5f12da5f6b4f19fe0b7aed4663815b77cc 6.4.0
+5af3ece2687abd2c73058df0a01ffedd96cbc83e 6.6.0