diff --git a/CMakeLists.txt b/CMakeLists.txt
index 133f30ea1ca..0a4eba5b445 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -220,7 +220,7 @@ SET (HAVE_MSSQL TRUE)
 
 #############################################################
 # search for Qt4
-SET(QT_MIN_VERSION 4.4.0)
+SET(QT_MIN_VERSION 4.5.0)
 FIND_PACKAGE(Qt4 ${QT_MIN_VERSION} REQUIRED)
 SET(QT_USE_QTXML 1)
 SET(QT_USE_QTNETWORK 1)
diff --git a/INSTALL b/INSTALL
index 2c420e22632..507f9615c2f 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,10 +1,10 @@
 QGIS
 Building QGIS from source - step by step
-Sunday July 21, 2013
+Saturday July 27, 2013
 
 
-Last Updated: Sunday July 21, 2013
-Last Change : Wednesday May 22, 2013
+Last Updated: Saturday July 27, 2013
+Last Change : Saturday July 27, 2013
 
 
   1. Introduction
@@ -98,7 +98,7 @@ Required build tools:
 
 Required build deps:
 
-- Qt >= 4.4.0
+- Qt >= 4.5.0
 - Proj >= 4.4.x
 - GEOS >= 3.0
 - Sqlite3 >= 3.0.0
diff --git a/debian/changelog b/debian/changelog
index d53b53163fe..79553aebf7f 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -18,8 +18,9 @@ qgis (1.9.0) UNRELEASED; urgency=low
   * drop context_help, function_help and qgis_help.db files
   * use dh_sip
   * add build dependency to xfonts (100dpi, 75dpi, scalable) for tests
+  * raise Qt dependency to 4.6
 
- -- Jürgen E. Fischer <jef@norbit.de>  Sat, 20 Jul 2013 13:18:52 +0200
+ -- Jürgen E. Fischer <jef@norbit.de>  Sat, 27 Jul 2013 16:45:43 +0200
 
 qgis (1.8.0) UNRELEASED; urgency=low
 
diff --git a/debian/control.lucid b/debian/control.lucid
index 847815b7e36..24986467aa8 100644
--- a/debian/control.lucid
+++ b/debian/control.lucid
@@ -15,7 +15,7 @@ Build-Depends:
  libgsl0-dev,
  libpq-dev,
  libproj-dev,
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libqwt5-qt4-dev,
  libspatialite-dev,
  libsqlite3-dev,
@@ -88,11 +88,11 @@ Depends:
  libpq-dev,
  libproj-dev,
  libqgis{QGIS_ABI} (= ${binary:Version}),
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libsqlite3-dev,
  python-qt4 (>=4.1.0),
  python-qt4-dev (>=4.1.0),
- qt4-designer (>=4.4.0),
+ qt4-designer (>=4.6.0),
  ${misc:Depends}
 Provides: qgis-dev
 Replaces: qgis-dev, libqgis1-dev, libqgis1.4.0-dev
diff --git a/debian/control.oneiric b/debian/control.oneiric
index bd4628ee370..62e0e1371b4 100644
--- a/debian/control.oneiric
+++ b/debian/control.oneiric
@@ -15,7 +15,7 @@ Build-Depends:
  libgsl0-dev,
  libpq-dev,
  libproj-dev,
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libqtwebkit-dev,
  libqwt5-qt4-dev,
  libspatialite-dev,
@@ -89,11 +89,11 @@ Depends:
  libpq-dev,
  libproj-dev,
  libqgis{QGIS_ABI} (= ${binary:Version}),
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libsqlite3-dev,
  python-qt4 (>=4.1.0),
  python-qt4-dev (>=4.1.0),
- qt4-designer (>=4.4.0),
+ qt4-designer (>=4.6.0),
  ${misc:Depends}
 Provides: qgis-dev
 Replaces: qgis-dev, libqgis1-dev, libqgis1.4.0-dev
diff --git a/debian/control.precise b/debian/control.precise
index 4b5c48cf069..0045a73d10c 100644
--- a/debian/control.precise
+++ b/debian/control.precise
@@ -15,7 +15,7 @@ Build-Depends:
  libgsl0-dev,
  libpq-dev,
  libproj-dev,
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libqt4-opengl-dev,
  libqtwebkit-dev,
  libqwt5-qt4-dev,
@@ -92,11 +92,11 @@ Depends:
  libpq-dev,
  libproj-dev,
  libqgis{QGIS_ABI} (= ${binary:Version}),
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libsqlite3-dev,
  python-qt4 (>=4.1.0),
  python-qt4-dev (>=4.1.0),
- qt4-designer (>=4.4.0),
+ qt4-designer (>=4.6.0),
  ${misc:Depends}
 Provides: qgis-dev
 Replaces: qgis-dev, libqgis1-dev, libqgis1.4.0-dev
diff --git a/debian/control.quantal b/debian/control.quantal
index d46daa91255..e8da8a4d221 100644
--- a/debian/control.quantal
+++ b/debian/control.quantal
@@ -15,7 +15,7 @@ Build-Depends:
  libgsl0-dev,
  libpq-dev,
  libproj-dev,
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libqt4-opengl-dev,
  libqtwebkit-dev,
  libqwt-dev,
@@ -91,11 +91,11 @@ Depends:
  libpq-dev,
  libproj-dev,
  libqgis{QGIS_ABI} (= ${binary:Version}),
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libsqlite3-dev,
  python-qt4 (>=4.1.0),
  python-qt4-dev (>=4.1.0),
- qt4-designer (>=4.4.0),
+ qt4-designer (>=4.6.0),
  ${misc:Depends}
 Provides: qgis-dev
 Replaces: qgis-dev, libqgis1-dev, libqgis1.4.0-dev
diff --git a/debian/control.raring b/debian/control.raring
index 007d0d2b3d9..abab52f3151 100644
--- a/debian/control.raring
+++ b/debian/control.raring
@@ -15,7 +15,7 @@ Build-Depends:
  libgsl0-dev,
  libpq-dev,
  libproj-dev,
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libqt4-opengl-dev,
  libqtwebkit-dev,
  libqwt5-qt4-dev,
@@ -93,11 +93,11 @@ Depends:
  libpq-dev,
  libproj-dev,
  libqgis{QGIS_ABI} (= ${binary:Version}),
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libsqlite3-dev,
  python-qt4 (>=4.1.0),
  python-qt4-dev (>=4.1.0),
- qt4-designer (>=4.4.0),
+ qt4-designer (>=4.6.0),
  ${misc:Depends}
 Provides: qgis-dev
 Replaces: qgis-dev, libqgis1-dev, libqgis1.4.0-dev
diff --git a/debian/control.sid b/debian/control.sid
index d46daa91255..d798e8caed1 100644
--- a/debian/control.sid
+++ b/debian/control.sid
@@ -15,7 +15,7 @@ Build-Depends:
  libgsl0-dev,
  libpq-dev,
  libproj-dev,
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libqt4-opengl-dev,
  libqtwebkit-dev,
  libqwt-dev,
@@ -91,7 +91,7 @@ Depends:
  libpq-dev,
  libproj-dev,
  libqgis{QGIS_ABI} (= ${binary:Version}),
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libsqlite3-dev,
  python-qt4 (>=4.1.0),
  python-qt4-dev (>=4.1.0),
diff --git a/debian/control.sid-oracle b/debian/control.sid-oracle
index 9ce4808a280..c3f90065719 100644
--- a/debian/control.sid-oracle
+++ b/debian/control.sid-oracle
@@ -15,7 +15,7 @@ Build-Depends:
  libgsl0-dev,
  libpq-dev,
  libproj-dev,
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libqt4-opengl-dev,
  libqtwebkit-dev,
  libqwt-dev,
@@ -92,11 +92,11 @@ Depends:
  libpq-dev,
  libproj-dev,
  libqgis{QGIS_ABI} (= ${binary:Version}),
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libsqlite3-dev,
  python-qt4 (>=4.1.0),
  python-qt4-dev (>=4.1.0),
- qt4-designer (>=4.4.0),
+ qt4-designer (>=4.6.0),
  ${misc:Depends}
 Provides: qgis-dev
 Replaces: qgis-dev, libqgis1-dev, libqgis1.4.0-dev
diff --git a/debian/control.squeeze b/debian/control.squeeze
index 6d286e657b5..cf6d5aa0755 100644
--- a/debian/control.squeeze
+++ b/debian/control.squeeze
@@ -15,7 +15,7 @@ Build-Depends:
  libgsl0-dev,
  libpq-dev,
  libproj-dev,
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libqwt5-qt4-dev,
  libspatialite-dev,
  libsqlite3-dev,
@@ -89,11 +89,11 @@ Depends:
  libpq-dev,
  libproj-dev,
  libqgis{QGIS_ABI} (= ${binary:Version}),
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libsqlite3-dev,
  python-qt4 (>=4.1.0),
  python-qt4-dev (>=4.1.0),
- qt4-designer (>=4.4.0),
+ qt4-designer (>=4.6.0),
  ${misc:Depends}
 Provides: qgis-dev
 Replaces: qgis-dev, libqgis1-dev, libqgis1.4.0-dev
diff --git a/debian/control.wheezy b/debian/control.wheezy
index 9c5dc5d8f9b..8e2e4efa64a 100644
--- a/debian/control.wheezy
+++ b/debian/control.wheezy
@@ -15,7 +15,7 @@ Build-Depends:
  libgsl0-dev,
  libpq-dev,
  libproj-dev,
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libqt4-opengl-dev,
  libqtwebkit-dev,
  libqwt-dev,
@@ -91,11 +91,11 @@ Depends:
  libpq-dev,
  libproj-dev,
  libqgis{QGIS_ABI} (= ${binary:Version}),
- libqt4-dev (>=4.4.0),
+ libqt4-dev (>=4.6.0),
  libsqlite3-dev,
  python-qt4 (>=4.1.0),
  python-qt4-dev (>=4.1.0),
- qt4-designer (>=4.4.0),
+ qt4-designer (>=4.6.0),
  ${misc:Depends}
 Provides: qgis-dev
 Replaces: qgis-dev, libqgis1-dev, libqgis1.4.0-dev
diff --git a/doc/INSTALL.html b/doc/INSTALL.html
index 0651bbb84c0..be4e73a4708 100644
--- a/doc/INSTALL.html
+++ b/doc/INSTALL.html
@@ -77,13 +77,13 @@ label{  background-color: #FFFFCC;
 <DIV CLASS="header" ID="header">
 <H1>QGIS</H1>
 <H2>Building QGIS from source - step by step</H2>
-<H3>Sunday July 21, 2013</H3>
+<H3>Saturday July 27, 2013</H3>
 </DIV>
 
 <DIV CLASS="body" ID="body">
 <P>
-Last Updated: Sunday July 21, 2013
-Last Change : Wednesday May 22, 2013
+Last Updated: Saturday July 27, 2013
+Last Change : Saturday July 27, 2013
 </P>
 <DIV CLASS="toc">
 
@@ -195,7 +195,7 @@ Required build tools:
 </P>
 
 <UL>
-<LI>CMake &gt;= 2.6.2
+<LI>CMake &gt;= 2.8.0
 <LI>Flex
 <LI>Bison &gt;= 2.4
 </UL>
@@ -205,7 +205,7 @@ Required build deps:
 </P>
 
 <UL>
-<LI>Qt &gt;= 4.4.0
+<LI>Qt &gt;= 4.5.0
 <LI>Proj &gt;= 4.4.x
 <LI>GEOS &gt;= 3.0
 <LI>Sqlite3 &gt;= 3.0.0
diff --git a/doc/overview.t2t b/doc/overview.t2t
index 53c9133bd33..f9e1760d4c2 100644
--- a/doc/overview.t2t
+++ b/doc/overview.t2t
@@ -15,7 +15,7 @@ Required build tools:
 
 Required build deps:
 
-- Qt >= 4.4.0
+- Qt >= 4.5.0
 - Proj >= 4.4.x
 - GEOS >= 3.0
 - Sqlite3 >= 3.0.0