diff --git a/.hgtags b/.hgtags
index 3ba3f5f068..150781c65f 100644
--- a/.hgtags
+++ b/.hgtags
@@ -1617,3 +1617,4 @@ c7a1c91cd9befb627eb908965ae3a611b381c7ad NSS_3_53_BETA1
 57bbefa793232586d27cee83e74411171e128361 NSS_3_58_BETA1
 c3cb09a7d08766701c7614879701b22af47543a8 NSS_3_59_BETA1
 c5d760cbe8d0c2221a2785db977bd1f1475510ca NSS_3_59_RTM
+8cb6b2f46a7561d22b9d4b687861f5214d69c29b NSS_3_59_1_RTM