diff --git a/.hgtags b/.hgtags
new file mode 100644
index 0000000000000000000000000000000000000000..8352b01823f51a0adfc46b75cb7489fcbe2b8005
--- /dev/null
+++ b/.hgtags
@@ -0,0 +1 @@
+bb38ff1a763738609e1b3cada6d15fa61e5e84b9 2.1.1-release