diff --git a/06osdeps_from_source.autobuild b/06osdeps_from_source.autobuild
index 87a5a91a..13d128a3 100644
--- a/06osdeps_from_source.autobuild
+++ b/06osdeps_from_source.autobuild
@@ -18,7 +18,7 @@ end
 
 only_in_flavor 'master', 'next' do
     setup_package 'external/opencv' do |pkg|
-        pkg.importer.relocate "http://downloads.sourceforge.net/project/opencvlibrary/opencv-unix/2.4.5/opencv-2.4.5.tar.gz"
+        pkg.importer.relocate "http://downloads.sourceforge.net/project/opencvlibrary/opencv-unix/2.4.9/opencv-2.4.9.zip"
     end
 end
 
diff --git a/source.yml b/source.yml
index 9bd39736..7c9fa9c1 100644
--- a/source.yml
+++ b/source.yml
@@ -80,7 +80,7 @@ version_control:
 
     - external/opencv:
         type: archive
-        url: http://downloads.sourceforge.net/project/opencvlibrary/opencv-unix/2.3/OpenCV-2.3.0.tar.bz2
+        url: http://downloads.sourceforge.net/project/opencvlibrary/opencv-unix/2.3.1/OpenCV-2.3.1a.tar.bz2
         update_cached_file: false
 
     - bundles/.*: