diff --git a/qt5-qttools.spec b/qt5-qttools.spec
index 5838c0d..2af3a63 100644
--- a/qt5-qttools.spec
+++ b/qt5-qttools.spec
@@ -20,7 +20,7 @@
 Summary: Qt5 - QtTool components
 Name:    qt5-qttools
 Version: 5.6.0
-Release: 0.7.%{prerelease}%{?dist}
+Release: 0.8.%{prerelease}%{?dist}
 
 License: LGPLv3 or LGPLv2
 Url:     http://www.qt.io
@@ -36,6 +36,10 @@ Patch1: qttools-opensource-src-5.3.2-system-clucene.patch
 # https://bugzilla.redhat.com/show_bug.cgi?id=1009893
 Patch2: qttools-opensource-src-5.5.0-qmake-qt5.patch
 
+# workaround https://bugreports.qt-project.org/browse/QTBUG-43057
+# 'make docs' crash on el6, use qSort instead of std::sort
+Patch3: qttools-opensource-src-5.6-QTBUG-43057.patch
+
 ## upstream patches
 
 Source20: assistant.desktop
@@ -203,6 +207,7 @@ Requires: %{name}-common = %{version}-%{release}
 rm -rf src/assistant/3rdparty/clucene
 %endif
 %patch2 -p1 -b .qmake-qt5
+%patch3 -p1 -b .QTBUG-43057
 
 
 %build
@@ -491,6 +496,9 @@ fi
 
 
 %changelog
+* Sun Jan 17 2016 Rex Dieter <rdieter@fedoraproject.org> 5.6.0-0.8.beta
+- port QTBUG-43057 workaround
+
 * Mon Dec 28 2015 Rex Dieter <rdieter@fedoraproject.org> 5.6.0-0.7.beta
 - update source URL, use %%license
 
diff --git a/qttools-opensource-src-5.6-QTBUG-43057.patch b/qttools-opensource-src-5.6-QTBUG-43057.patch
new file mode 100644
index 0000000..71ed24c
--- /dev/null
+++ b/qttools-opensource-src-5.6-QTBUG-43057.patch
@@ -0,0 +1,12 @@
+diff -up qttools-opensource-src-5.6.0-beta/src/qdoc/qdocindexfiles.cpp.orig qttools-opensource-src-5.6.0-beta/src/qdoc/qdocindexfiles.cpp
+--- qttools-opensource-src-5.6.0-beta/src/qdoc/qdocindexfiles.cpp.orig	2015-12-14 10:58:18.000000000 -0600
++++ qttools-opensource-src-5.6.0-beta/src/qdoc/qdocindexfiles.cpp	2016-01-17 20:42:45.946004310 -0600
+@@ -1531,7 +1531,7 @@ void QDocIndexFiles::generateIndexSectio
+             const Aggregate* inner = static_cast<const Aggregate*>(node);
+ 
+             NodeList cnodes = inner->childNodes();
+-            std::sort(cnodes.begin(), cnodes.end(), compareNodes);
++            qSort(cnodes.begin(), cnodes.end(), compareNodes);
+ 
+             foreach (Node* child, cnodes) {
+                 generateIndexSections(writer, child, generateInternalNodes);