diff --git a/doc/man/julia.1 b/doc/man/julia.1
index 8c68a5a940548..0a5cc2aa49024 100644
--- a/doc/man/julia.1
+++ b/doc/man/julia.1
@@ -63,6 +63,11 @@ Display version information
 -h, --help
 Print help message
 
+.TP
+--project=<dir>/@.
+Set <dir> as the home project/environment. The @. option will search through
+parent directories until a Project.toml or JuliaProject.toml file is found.
+
 .TP
 -J, --sysimage <file>
 Start up with the given system image file
diff --git a/src/jloptions.c b/src/jloptions.c
index 83c5121a5bff5..6140bbd5e22a3 100644
--- a/src/jloptions.c
+++ b/src/jloptions.c
@@ -78,6 +78,7 @@ static const char opts[]  =
     " -h, --help                Print this message\n\n"
 
     // startup options
+    " --project=<dir>/@.        Set <dir> as the home project/environment\n"
     " -J, --sysimage <file>     Start up with the given system image file\n"
     " -H, --home <dir>          Set location of `julia` executable\n"
     " --startup-file={yes|no}   Load `~/.julia/config/startup.jl`\n"