diff --git a/.hgtags b/.hgtags
index 3f4c4092d..3d081fedb 100644
--- a/.hgtags
+++ b/.hgtags
@@ -4055,3 +4055,5 @@ bf3c7e2e51eaa16d42b842b25d3d13c0bd8378e9 FIREFOX_35_0_RELEASE_RUNTIME
 bf3c7e2e51eaa16d42b842b25d3d13c0bd8378e9 FIREFOX_35_0_BUILD3_RUNTIME
 76aadc7471d99a9b2853dc89ca04c676aa3a004c THUNDERBIRD_31_4_0_BUILD1
 76aadc7471d99a9b2853dc89ca04c676aa3a004c THUNDERBIRD_31_4_0_RELEASE
+8dc04c7430abbcbba389738afe37c276fbca0d68 THUNDERBIRD_31_4_0_RELEASE_RUNTIME
+8dc04c7430abbcbba389738afe37c276fbca0d68 THUNDERBIRD_31_4_0_BUILD1_RUNTIME