diff --git a/.hgtags b/.hgtags
index 23c72bb..e7f84fe 100644
--- a/.hgtags
+++ b/.hgtags
@@ -175,3 +175,4 @@
 60707ebc037086cf004736a0d4979e2a608da033 release-0.6.18
 3c2a99d3a71af846855be35e62edb9a12f363f44 release-0.6.19
 3e0a27f9358ffc1b5249e0ea2311ce7da5c8967e release-0.6.20
+143f4d65b1c875d6563ccb7f653d9157afc72194 release-0.6.21