diff --git a/doc/index.html b/doc/index.html
index 2fde434..e0ad990 100644
--- a/doc/index.html
+++ b/doc/index.html
@@ -182,12 +182,12 @@ OpenGL Software Development Kit</a></li>
 <li><a
 href="http://www.opengl.org/resources/features/OGLextensions/">
 All About OpenGL Extensions</a></li>
-<li><a href="http://oss.sgi.com/projects/ogl-sample/registry/">OpenGL Extension Registry</a></li>
+<li><a href="http://www.opengl.org/registry/">OpenGL Extension Registry</a></li>
 <li><a
-href="http://www.ati.com/developer/sdk/radeonSDK/html/info/Prog3D.html">ATI
+href="http://ati.amd.com/developer/sdk/radeonSDK/html/info/Prog3D.html">ATI
 OpenGL Extension Specifications</a></li>
 <li><a
-href="http://developer.apple.com/opengl/extensions.html">
+href="http://developer.apple.com/graphicsimaging/opengl/extensions.html">
 APPLE OpenGL Extensions Guide</a></li>
 <li><a
 href="http://developer.nvidia.com/object/nvidia_opengl_specs.html">NVIDIA