diff --git a/README.md b/README.md
index e9e75c70a2..420bbcb9d5 100644
--- a/README.md
+++ b/README.md
@@ -905,6 +905,9 @@ are set, `just` will try to load environment variables from a file.
 If `dotenv-path` is set, `just` will look for a file at the given path, which
 may be absolute, or relative to the working directory.
 
+The command-line option `--dotenv-path`, short form `-E`, can be used to set or
+override `dotenv-path` at runtime.
+
 If `dotenv-filename` is set `just` will look for a file at the given path,
 relative to the working directory and each of its ancestors.