diff --git a/.hgtags b/.hgtags
index b3d8a96f687ee8b56fa7d395f060e35985966e43_LmhndGFncw==..ab3e09b746787c3780f50e608771b454e73edeae_LmhndGFncw== 100644
--- a/.hgtags
+++ b/.hgtags
@@ -10,3 +10,4 @@
 60a8fadc3464197836ccbc8c439d65afe37b4a8b 0.2.2
 a2909d42f1c678b0639ff299cb10f596d3443edb 0.3.0
 9d39189c32147f877bf98418780e862e6de7b724 0.4.0
+b3d8a96f687ee8b56fa7d395f060e35985966e43 0.5.1