diff --git a/doc/I00_CustomizingEigen.dox b/doc/I00_CustomizingEigen.dox
index 8182a86ef..7c8ba9b75 100644
--- a/doc/I00_CustomizingEigen.dox
+++ b/doc/I00_CustomizingEigen.dox
@@ -125,7 +125,7 @@ In order to add support for a custom type \c T you need:
  3 - define a couple of math functions for your type such as: ei_sqrt, ei_abs, etc...
      (see the file Eigen/src/Core/MathFunctions.h)
 
-Here is a concrete example adding support for the Adolc's \c adouble type. <a href="http://www.math.tu-dresden.de/~adol-c/">Adolc</a> is an automatic differentiation library. The type \c adouble is basically a real value tracking the values of any number of partial derivatives.
+Here is a concrete example adding support for the Adolc's \c adouble type. <a href="https://projects.coin-or.org/ADOL-C">Adolc</a> is an automatic differentiation library. The type \c adouble is basically a real value tracking the values of any number of partial derivatives.
 
 \code
 #ifndef ADLOCSUPPORT_H
diff --git a/unsupported/Eigen/AdolcForward b/unsupported/Eigen/AdolcForward
index 9a54a3aaa..70aa47815 100644
--- a/unsupported/Eigen/AdolcForward
+++ b/unsupported/Eigen/AdolcForward
@@ -29,7 +29,7 @@
 //
 // This file provides support for adolc's adouble type in forward mode.
 // ADOL-C is a C++ automatic differentiation library,
-// see http://www.math.tu-dresden.de/~adol-c/ for more information.
+// see https://projects.coin-or.org/ADOL-C for more information.
 //
 // Note that the maximal number of directions is controlled by
 // the preprocessor token NUMBER_DIRECTIONS. The default is 2.
@@ -63,7 +63,7 @@ namespace Eigen {
   * \defgroup AdolcForward_Module Adolc forward module
   * This module provides support for adolc's adouble type in forward mode.
   * ADOL-C is a C++ automatic differentiation library,
-  * see http://www.math.tu-dresden.de/~adol-c/ for more information.
+  * see https://projects.coin-or.org/ADOL-C for more information.
   * It mainly consists in:
   *  - a struct Eigen::NumTraits<adtl::adouble> specialization
   *  - overloads of ei_* math function for adtl::adouble type.