diff --git a/sources b/sources
index a387546..8de38a6 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-7c5433b1b58a56ce0f8d451e7217f282  firefox-30.0.source.tar.bz2
+499b70a9f08a2291d528e87eaf8804a3  firefox-31.0.source.tar.bz2
diff --git a/xulrunner.spec b/xulrunner.spec
index e6e0c1c..7dbcc76 100644
--- a/xulrunner.spec
+++ b/xulrunner.spec
@@ -77,8 +77,8 @@
 
 Summary:        XUL Runtime for Gecko Applications
 Name:           xulrunner
-Version:        30.0
-Release:        3%{?pre_tag}%{?dist}
+Version:        31.0
+Release:        1%{?pre_tag}%{?dist}
 URL:            http://developer.mozilla.org/En/XULRunner
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Group:          Applications/Internet
@@ -521,6 +521,9 @@ fi
 #---------------------------------------------------------------------
 
 %changelog
+* Fri Jul 25 2014 Martin Stransky <stransky@redhat.com> - 31.0-1
+- Update to 31.0 build 2
+
 * Fri Jul 25 2014 Yaakov Selkowitz <yselkowi@redhat.com> - 30.0-3
 - Fix mozilla-config.h wrapper on aarch64