diff --git a/mozilla/client.mk b/mozilla/client.mk
index d9db4aec4b1..c22ed4d6dc6 100644
--- a/mozilla/client.mk
+++ b/mozilla/client.mk
@@ -411,7 +411,7 @@ MODULES_all :=                                  \
 # and commit this file on that tag.
 #MOZ_CO_TAG          = <tag>
 NSPR_CO_TAG          = NSPR_4_7_5_RTM
-NSS_CO_TAG           = NSS_3_12_2_WITH_CKBI_1_75_RTM
+NSS_CO_TAG           = NSS_3_12_3_1_RTM
 LDAPCSDK_CO_TAG      = LDAPCSDK_6_0_3_CLIENT_BRANCH
 LOCALES_CO_TAG       =