diff --git a/.hgtags b/.hgtags
new file mode 100644
index 0000000000000000000000000000000000000000..5027d644eaebbacf7842670d9c66b52b74f07fc1
--- /dev/null
+++ b/.hgtags
@@ -0,0 +1 @@
+b0ac053952d9f0562909c26492eb31081262f0d1 11.21.11