diff -Nru oxide-qt-1.9.1/debian/changelog oxide-qt-1.9.2/debian/changelog
--- oxide-qt-1.9.1/debian/changelog	2015-09-04 12:08:47.000000000 +0000
+++ oxide-qt-1.9.2/debian/changelog	2015-09-10 09:28:45.000000000 +0000
@@ -1,3 +1,10 @@
+oxide-qt (1.9.2-0ubuntu0.15.04.1) vivid-security; urgency=medium
+
+  * Update to v1.9.2
+    - Fix LP: #1447311 - Disable the unprivileged namespace sandbox
+
+ -- Chris Coulson <chris.coulson@canonical.com>  Thu, 10 Sep 2015 10:27:30 +0100
+
 oxide-qt (1.9.1-0ubuntu0.15.04.1) vivid-security; urgency=medium
 
   * Update to v1.9.1 (see USN-2735-1)
diff -Nru oxide-qt-1.9.1/qt/qmlplugin/oxide_qml_ssl_certificate.cc oxide-qt-1.9.2/qt/qmlplugin/oxide_qml_ssl_certificate.cc
--- oxide-qt-1.9.1/qt/qmlplugin/oxide_qml_ssl_certificate.cc	2015-09-02 11:27:38.000000000 +0000
+++ oxide-qt-1.9.2/qt/qmlplugin/oxide_qml_ssl_certificate.cc	2015-09-04 15:33:03.000000000 +0000
@@ -22,7 +22,11 @@
 #include <QQmlEngine>
 #include <QtQml/private/qqmldata_p.h>
 #include <QtQml/private/qv4engine_p.h>
+#if QT_VERSION < QT_VERSION_CHECK(5, 3, 0)
+#include <QtQml/private/qv4value_p.h>
+#else
 #include <QtQml/private/qv4persistent_p.h>
+#endif
 #include <QtQml/private/qv8engine_p.h>
 
 namespace oxide {
diff -Nru oxide-qt-1.9.1/qt/VERSION oxide-qt-1.9.2/qt/VERSION
--- oxide-qt-1.9.1/qt/VERSION	2015-09-03 08:39:40.000000000 +0000
+++ oxide-qt-1.9.2/qt/VERSION	2015-09-10 08:33:37.000000000 +0000
@@ -1,3 +1,3 @@
 MAJOR=1
 MINOR=9
-PATCH=1
+PATCH=2
\ No newline at end of file
diff -Nru oxide-qt-1.9.1/shared/browser/oxide_browser_process_main.cc oxide-qt-1.9.2/shared/browser/oxide_browser_process_main.cc
--- oxide-qt-1.9.1/shared/browser/oxide_browser_process_main.cc	2015-07-28 14:10:59.000000000 +0000
+++ oxide-qt-1.9.2/shared/browser/oxide_browser_process_main.cc	2015-09-10 08:31:34.000000000 +0000
@@ -267,6 +267,9 @@
   if (IsEnvironmentOptionEnabled("NO_SANDBOX")) {
     command_line->AppendSwitch(switches::kNoSandbox);
   } else {
+    // See https://launchpad.net/bugs/1447311
+    command_line->AppendSwitch(switches::kDisableNamespaceSandbox);
+
     if (IsEnvironmentOptionEnabled("DISABLE_SETUID_SANDBOX")) {
       command_line->AppendSwitch(switches::kDisableSetuidSandbox);
     }