release-1.5.1 tag
diff --git a/.hgtags b/.hgtags
index fc3c962..e193c8e 100644
--- a/.hgtags
+++ b/.hgtags
@@ -356,3 +356,4 @@
 23159600bdea695db8f9d2890aaf73424303e49c release-1.3.16
 7809529022b83157067e7d1e2fb65d57db5f4d99 release-1.4.0
 48a84bc3ff074a65a63e353b9796ff2b14239699 release-1.5.0
+99eed1a88fc33f32d66e2ec913874dfef3e12fcc release-1.5.1