yet another Teddy contributionupdate-INSTALL

1 files changed, 9 insertions, 0 deletions

diff --git a/INSTALL.md b/INSTALL.md
index b95a67dbf..7516c20ee 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -32,6 +32,15 @@ Then install yarn (`brew install yarn` does nicely on macOS).
 ... is managed by the webpacker gem, thusly at latest
  before starting your server and tests, setup webpacker with `bundle exec rake webpacker:install`.
 
+
+It seems that for older versions of Rails this alternative command must be used:
+
+      rake webpacker:yarn_install
+
+According to `rake -T`:
+
+      rake webpacker:yarn_install[arg1,arg2]                     # Support for older Rails versions
+
 ### Installation Caveats
 
 #### Node Related Issue, libv8