diff --git a/doc/howtos/backend.rst b/doc/howtos/backend.rst
index 7eef640326d..ddc41dca404 100644
--- a/doc/howtos/backend.rst
+++ b/doc/howtos/backend.rst
@@ -1001,7 +1001,7 @@ behavior:
 
     ``{$name}`` can be ``bf`` (``font-weight: bold``), ``it``
     (``font-style: italic``), or any `bootstrap contextual color
-    <http://getbootstrap.com/components/#available-variations>`_ (``danger``,
+    <https://getbootstrap.com/docs/3.3/components/#available-variations>`_ (``danger``,
     ``info``, ``muted``, ``primary``, ``success`` or ``warning``).
 
     .. code-block:: xml
diff --git a/doc/reference/views.rst b/doc/reference/views.rst
index 685b74ec523..d1fcb7ec59f 100644
--- a/doc/reference/views.rst
+++ b/doc/reference/views.rst
@@ -166,7 +166,7 @@ root can have the following attributes:
 
     ``{$name}`` can be ``bf`` (``font-weight: bold``), ``it``
     (``font-style: italic``), or any `bootstrap contextual color
-    <http://getbootstrap.com/components/#available-variations>`_ (``danger``,
+    <https://getbootstrap.com/docs/3.3/components/#available-variations>`_ (``danger``,
     ``info``, ``muted``, ``primary``, ``success`` or ``warning``).
 ``create``, ``edit``, ``delete``
     allows *dis*\ abling the corresponding action in the view by setting the