diff --git a/src/Documenter.jl b/src/Documenter.jl
index dfa992c6fc..4417da1c2e 100644
--- a/src/Documenter.jl
+++ b/src/Documenter.jl
@@ -64,6 +64,7 @@ export Deps, makedocs, deploydocs, hide
         modules = Module[],
         repo    = "",
         highlightsig = true,
+        sitename = "",
     )
 
 Combines markdown files and inline docstrings into an interlinked document.
@@ -156,6 +157,8 @@ indented code block containing the function signature, then that block would be
 as if it were a labeled Julia code block. No other code blocks are affected. This feature
 is enabled by default.
 
+**`sitename`** is displayed in the title bar and/or the navigation menu when applicable.
+
 # Experimental keywords
 
 In addition to standard arguments there is a set of non-finalized experimental keyword