diff --git a/doc/bind/troubleshooting.qbk b/doc/bind/troubleshooting.qbk
index 21a7b37..4523a6b 100644
--- a/doc/bind/troubleshooting.qbk
+++ b/doc/bind/troubleshooting.qbk
@@ -167,8 +167,8 @@ variable:
 [section Modeling STL function object concepts]
 
 The function objects that are produced by `bind` do not model the STL
-[@http://www.sgi.com/tech/stl/UnaryFunction.html /Unary Function/] or
-[@http://www.sgi.com/tech/stl/BinaryFunction.html /Binary Function/] concepts,
+[@https://boost.org/sgi/stl/UnaryFunction.html /Unary Function/] or
+[@https://boost.org/sgi/stl/BinaryFunction.html /Binary Function/] concepts,
 even when the function objects are unary or binary operations, because the
 function object types are missing public typedefs `result_type` and
 `argument_type` or `first_argument_type` and `second_argument_type`. In cases
diff --git a/doc/html/bind.html b/doc/html/bind.html
index 5f35c5d..97784fb 100644
--- a/doc/html/bind.html
+++ b/doc/html/bind.html
@@ -900,8 +900,8 @@
 </h3></div></div></div>
 <p>
         The function objects that are produced by <code class="computeroutput"><span class="identifier">bind</span></code>
-        do not model the STL <a href="http://www.sgi.com/tech/stl/UnaryFunction.html" target="_top"><span class="emphasis"><em>Unary
-        Function</em></span></a> or <a href="http://www.sgi.com/tech/stl/BinaryFunction.html" target="_top"><span class="emphasis"><em>Binary
+        do not model the STL <a href="https://boost.org/sgi/stl/UnaryFunction.html" target="_top"><span class="emphasis"><em>Unary
+        Function</em></span></a> or <a href="https://boost.org/sgi/stl/BinaryFunction.html" target="_top"><span class="emphasis"><em>Binary
         Function</em></span></a> concepts, even when the function objects are
         unary or binary operations, because the function object types are missing
         public typedefs <code class="computeroutput"><span class="identifier">result_type</span></code>