diff --git a/.hgtags b/.hgtags
--- a/.hgtags
+++ b/.hgtags
@@ -1449,5 +1449,6 @@
 fa72e773a9ebcd6de1c0e0d25e1cb6b07f09b6e8 DEVEDITION_64_0b14_RELEASE
 fa72e773a9ebcd6de1c0e0d25e1cb6b07f09b6e8 FIREFOX_64_0b14_RELEASE
 e4535e943651ce499a93bbc4592cb16adab897bd FIREFOX_RELEASE_64_BASE
 0010639216223e5f5fcf753bb64fb93588d787bd FIREFOX_RELEASE_63_END
 80a34446b74a1ee3d0d5e3bf69232b8b0a5e64ab FIREFOX_64_0_BUILD1
+319052b37637c5472406ea7ee330d2cd50dca3e0 FIREFOX_64_0_BUILD2