Added tag jdk9-b18 for changeset 275f2385aed8
diff --git a/.hgtags b/.hgtags
index ce037a8..a2cf881 100644
--- a/.hgtags
+++ b/.hgtags
@@ -263,3 +263,4 @@
 e9780330017a6b464a385356d77e5136f9de8d09 jdk9-b15
 1e1a3b2215b7551d88e89d1ca8c1e1ebe3d3c0ab jdk9-b16
 6b159e727dac283f424b7d19f5be3ddd9f85acf5 jdk9-b17
+275f2385aed80c84297840638d58656366350c58 jdk9-b18