diff --git a/Documentation/doc/Documentation/Installation.txt b/Documentation/doc/Documentation/Installation.txt
index e5a16f9ab91..9fbf30f6368 100644
--- a/Documentation/doc/Documentation/Installation.txt
+++ b/Documentation/doc/Documentation/Installation.txt
@@ -347,7 +347,7 @@ installed as binaries.
 
 \cgal requires the \sc{Boost} libraries. In particular the header files
 and the threading library (`Boost.Thread` and
-`Boost.System` binaries). Version 1.39 (or higher) are needed.
+`Boost.System` binaries). Version 1.48 (or higher) are needed.
 
 On Windows, as auto-linking is used, you also need the binaries of
 `Boost.Serialization` and `Boost.DateTime`, but the
@@ -724,13 +724,13 @@ cmake -DWITH_examples=OFF -DWITH_demos=OFF -DCMAKE_BUILD_TYPE=Release
 -- MPFR libraries: /usr/lib/libmpfr.so
 -- MPFR definitions: 
 -- USING MPFR_VERSION = '3.0.0'
--- Boost version: 1.39.0
+-- Boost version: 1.48.0
 -- Found the following Boost libraries:
 -- thread
--- Boost include: /usr/include/boost_1_39_0/include/boost-1_39
+-- Boost include: /usr/include/boost_1_48_0/include/boost-1_48
 -- Boost libraries: /usr/lib/libboost_thread-mt.so;pthread
 -- Boost definitions: 
--- USING BOOST_VERSION = '1.39.0'
+-- USING BOOST_VERSION = '1.48.0'
 == Detect external libraries (DONE) ==
 
 == Write compiler_config.h ==
diff --git a/Installation/CHANGES b/Installation/CHANGES
index 2d5176998f4..936e7a8acab 100644
--- a/Installation/CHANGES
+++ b/Installation/CHANGES
@@ -1,9 +1,12 @@
 
 -------------------------------- Release 4.6 --------------------------------
 
-Release date: March 2015
+Release date: April 2015
 
 
+* Installation
+
+  - The required version of Boost is now 1.48 or higher.
 
 
 * 2D Polyline Simplification (new package)
diff --git a/Installation/INSTALL.md b/Installation/INSTALL.md
index 89d3b9023ae..e5277a92924 100644
--- a/Installation/INSTALL.md
+++ b/Installation/INSTALL.md
@@ -30,7 +30,7 @@ CGAL packages, some are only needed for demos.
      Required for building CGAL
      On Windows, CMake >= 2.8.6 is required.
 
-   * Boost (>= 1.39)
+   * Boost (>= 1.48)
      Required for building CGAL and for applications using CGAL
      Required compiled Boost library: Boost.Thread, Boost.System
      Optional compiled Boost library: Boost.Program_options
diff --git a/Installation/changes.html b/Installation/changes.html
index bff7e3e27f1..df90275b2e6 100644
--- a/Installation/changes.html
+++ b/Installation/changes.html
@@ -117,6 +117,10 @@ and <code>src/</code> directories).
   <p>Release date: April 2015 </p>
 
 <!-- Installation (and general changes) -->
+  <h3>Installation</h3>
+  <ul>
+    <li>The required version of Boost is now 1.48 or higher.</li>
+  </ul>
 <!-- New packages -->
   <h3>2D Polyline Simplification (new package)</h3>
   <ul>
diff --git a/Installation/cmake/modules/CGAL_SetupBoost.cmake b/Installation/cmake/modules/CGAL_SetupBoost.cmake
index 06efd716859..1dd3b7cce74 100644
--- a/Installation/cmake/modules/CGAL_SetupBoost.cmake
+++ b/Installation/cmake/modules/CGAL_SetupBoost.cmake
@@ -1,9 +1,9 @@
 if ( NOT CGAL_Boost_Setup )
 
   include(CGAL_TweakFindBoost)
-  # In the documentation, we say we require Boost-1.39, but technically we
-  # require 1.33.1. Some packages may require more recent versions, though.
-  find_package( Boost 1.33.1 REQUIRED thread system )
+  # In the documentation, we say we require Boost-1.48, but technically we
+  # require 1.39. Some packages may require more recent versions, though.
+  find_package( Boost 1.39 REQUIRED thread system )
 
   if(Boost_FOUND)
     if(DEFINED Boost_DIR AND NOT Boost_DIR)