diff --git a/INSTALL.md b/INSTALL.md
index 0fe0a04d..a28bb3ef 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -39,7 +39,7 @@ And go from there.  Manpages are available in the 'doc' directory.
 To install properly, run:
 
     python3 setup.py build
-    python3 setup.py install --record=install-files.txt
+    python3 setup.py install --single-version-externally-managed --record=install-files.txt
 
 See `--help` for an overview of the available options; e.g. `--prefix` to
 install to a custom base directory, and `--without-gettext` to avoid