diff --git a/.hgtags b/.hgtags
index a3058aa2539827fcc16f7066c88e2c5758102976..5fb06c3609c4294763082c53393d27cdc51ef86b 100755
--- a/.hgtags
+++ b/.hgtags
@@ -493,3 +493,4 @@ bcc2770e21c125e0bab59141c51db9145aec068d 3.7.17-release
 2729c1daf0257d68a40bdbc4acf1a16184974bbd 3.7.18-release
 82973b38a6c9a457333e3519e4f2b16bb5eedf47 3.7.19-release
 27094824773b907c2e559396e6f9ec3a963de52d 3.7.20-release
+9ecab4b0c7d8614767724a3422d3c1dca6bd4e4f 3.7.21-release