diff --git a/hugo/content/installation/devbuild/_index.md b/hugo/content/installation/devbuild/_index.md
index 9d1af8946233242b8abce5ea905545439570fddd..e1b5c1322f5a3f7afd04d7c5f8d211157e832614 100644
--- a/hugo/content/installation/devbuild/_index.md
+++ b/hugo/content/installation/devbuild/_index.md
@@ -22,4 +22,8 @@ Developers need additional tools, beyond those required for building BornAgain f
 
 Of these, clang-format is not controlled by `make`, but must be run manually.
 
+Optionally, the following tools can be needed:
+- Graphviz, to visualize project hierarchy with doxygen;
+- hugo, to generate [web documentation](/howto/contribute-to-documentation).
+
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