diff --git a/thunderbird.spec b/thunderbird.spec
index ee8e7fd..5f1b4e2 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -1,5 +1,5 @@
 %define nspr_version 4.8
-%define nss_version 3.12.8
+%define nss_version 3.12.10
 %define cairo_version 1.8.8
 %define freetype_version 2.1.9
 %define sqlite_version 3.6.14