diff --git a/doc/Doxyfile.in b/doc/Doxyfile.in
index d5c969a8a..fd7f4e5f6 100644
--- a/doc/Doxyfile.in
+++ b/doc/Doxyfile.in
@@ -1188,7 +1188,7 @@ USE_MATHJAX            = YES
 # MathJax, but it is strongly recommended to install a local copy of MathJax 
 # before deployment.
 
-MATHJAX_RELPATH        = http://cdn.mathjax.org/mathjax/latest
+MATHJAX_RELPATH        = https://cdn.mathjax.org/mathjax/latest
 
 # The MATHJAX_EXTENSIONS tag can be used to specify one or MathJax extension 
 # names that should be enabled during MathJax rendering.